Option 1 states that both Statement I and Statement II are individually true, and Statement II is the correct explanation of Statement I.

Statement I states that in 1856, Nawab Wajid Ali Shah was dethroned and exiled to Calcutta on the plea that the region was being misgoverned. This means that the Nawab was removed from power and sent away because it was believed that he was not governing the region effectively.

Statement II states that the Nawab was accused of being unable to control the rebellious chiefs and Taluqdars. This means that the Nawab was blamed for his inability to manage and control the chiefs and landowners who were rebelling against his rule.

Option 1 suggests that both statements are true, meaning that the Nawab was indeed dethroned and exiled due to misgovernance, and he was indeed accused of being unable to control the rebellious chiefs and Taluqdars. Furthermore, it states that Statement II is the correct explanation of Statement I, indicating that the reason for the Nawab`s dethronement and exile was his failure to control the rebellious factions.

Therefore, option 1 is the correct answer, as it accurately describes the relationship between Statement I