Explanation:

Bankim Chandra Chatterjee's iconic Bengali novel 'Anand Math', published in 1882, is historically significant for its portrayal of the **Sanyasi Rebellion**. This rebellion, which occurred in the late 18th century (roughly 1770s-1800s) in Bengal and Bihar, involved Hindu and Muslim ascetics (sanyasis and fakirs) who rose against the oppressive British East India Company rule and its land revenue policies, particularly after the devastating Bengal Famine of 1770. The novel popularized the hymn 'Vande Mataram', which later became a powerful anthem for the Indian nationalist movement. Option A is correct as 'Anand Math' is directly based on the Sanyasi Rebellion. Option B, the Bhil uprising, refers to a series of revolts by the Bhil tribal community in various parts of western India, primarily against British and princely state authorities, but it is not the subject of 'Anand Math'. Option C, the Birbhum rebellion, was a peasant uprising in the Birbhum district of Bengal in the late 18th century, also not the focus of Chatterjee's novel. Option D, the Rangpur uprising, was a significant peasant rebellion in Rangpur, Bengal, in 1783, against the revenue demands of the East India Company, but it is not the historical backdrop for 'Anand Math'.