(b) Indian Ocean has monsoon drift
Indian Ocean has monsoon drift due to which it is responsible for the change in the regular direction of the ocean currents in the Indian Ocean. Due to the monsoon drift of Indian Ocean, its regular direction of the ocean currents changes twice a year.

(a) Fritz Zwicky
Dark matter is made up of particles that do not have a charge. These particles are “dark” because they do not emit light, and “matter” because they possess mass like normal matter and interact through gravity. Dark matter is hard to spot because it does not absorb, reflect, or emit light. It also does not interact with the electromagnetic force.
Dark matter cannot be detected directly by conventional sensors and detectors because it does not interact with matter and emits no light or energy.

(c) Only three
After the Great Revolt of 1857, the British took many steps to break the unity among Hindus and Muslims in India. The Divide and Rule Policy was adopted by the British to divide people into groups based on their religion. The Partition of Bengal was done to curb the growing nationalism in Bengal and create a divide between the Hindus and the Muslims. The English actively tried to brand the National Movement as the movement for a Hindu Rashtra. Through these steps, they turned the Hindus and Muslims against each other.
They did not supported Swadeshi movement was supported. (Statement 4 is incorrect)

(a) 1 only
The Anglo-Maratha Wars were a series of three wars that took place between the British and the Marathas between the late 18th and early 19th centuries. The wars were caused by territorial disputes and power struggles between the British and the Marathas.
• The first Anglo-Maratha War (1775-1782) was caused by territorial disputes and power struggles between the British and the Marathas. The British East India Company had access to superior weapons and employed more effective military tactics than the Maratha Empire. The Marathas also lacked effective leadership, troop organization, and military equipment. (Statement 1 is correct)
• The Second Anglo-Maratha War was fought between the British East India Company and the Maratha Empire from 1803–1805. The war ended in a stalemate but resulted in significant territorial losses for the Maratha Empire. The war paved the way for British colonial rule in India
Subsidiary Alliance was basically a treaty between the British East India Company and the Indian princely states. It was agreed to by the Peshwa before the Second Anglo Maratha war. (Statement 2 is incorrect)
In 1802, Bajirao II signed the Subsidiary Alliance treaty with the British. This alliance is well known as the Treaty of Vasai. With this British gained control of Maratha territories.
• Third Anglo-Maratha War (1817 – 1818): The chief reason for this war was the British conflict with the Pindaris whom the British suspected were being protected by the Marathas. The Maratha chiefs Peshwa Bajirao II, Malharrao Holkar and Mudhoji II Bhonsle forged a united front against the English.

(a) Only one
Dadabhai Naroji,was patronized by Sayajiro Gaekwad III, Maharaja of Baroda and started his career as Dewan to Maharaja. He was the founder of the Rast Goftar means “the truth teller” and also published another newspaper “the voice of India”. He further helped in establishing the East India Association in 1867, with the aim of putting across the Indian viewpoint before the British. He was also a member of Indian National Association, which aimed at promoting the legitimate means of material, intellectual and political advancement of the people. The Association was instrumental in counteracting the propaganda of the London Ethnological Society, which attempted to demonstrate the inferiority of the Asians to the Europeans at its session in 1866. When the Indian national congress and the Indian national association merged, Naroji was elected the president.
(Statements 2 and 3 are incorrect)
In 1901, he published Poverty and un-british rule in India, which focused on the drain of wealth from India to Britain resulting in widespread poverty and severe famines. His work on economic exploitation gave a rise to the Indian nationalist movement. Six factors which resulted in the external drain were identified by Naoroji. Initially, there was a foreign government ruling India. Second, India did not draw immigrants for economic growth that brought labour and capital. Thirdly, India paid for the civil administration of Britain in India and for its Indian army. Fourth, the responsibility of empire building in and out of its borders was borne by India. Fifthly, opening up the nation to free trade made it possible for foreigners to take over the highly paying employment of equally skilled Indians.