Explanations:The question involves three statements that need to be evaluated for their truthfulness. Let's break down each statement and understand the context behind them.
The first statement is about the validity of Indo-Bangladesh passports for travel to Sri Lanka and Bangladesh. Indo-Bangladesh passports are a type of travel document that allows citizens of India and Bangladesh to travel between the two countries without a visa. However, the statement also mentions Sri Lanka, which is not part of the Indo-Bangladesh passport agreement. Therefore, the statement is partially true, as it is valid for travel between India and Bangladesh, but not for travel to Sri Lanka.
The second statement asserts that India, Pakistan, Nepal, Bhutan, Bangladesh, and Sri Lanka form a subcontinent. This is a geographical and political fact. The South Asian subcontinent, also known as the Indian subcontinent, includes these countries. The term "subcontinent" refers to a large, distinct landmass that is part of a larger continent but is considered a separate geographical and cultural entity. The South Asian subcontinent is a well-defined region with its own unique history, culture, and political dynamics.
The third statement concerns the historical context of the East India Company's rule in Bengal. The East India Company was a British trading company that established a significant presence in India during the 17th and 18th centuries. In 1765, the East India Company became the Diwan of Bengal, which meant they had the authority to collect revenue from the region. The company imposed heavy taxes and demanded high dues from the peasants, leading to widespread economic hardship. The peasants were unable to pay the dues, which resulted in famines and social unrest. This historical context is well-documented and forms a significant part of the history of colonial India.
Given the analysis of each statement, we can conclude that all three statements are true. The first statement is true in the context of travel between India and Bangladesh, the second statement is true in terms of the geographical and political definition of the South Asian subcontinent, and the third statement is true based on the historical impact of the East India Company's rule in Bengal.
Therefore, the correct answer is Option C: Only 1, 2, 3.