Correct answer: A. Land and debt control by outside exploiters
Explanation: The Santhal Hul was a major uprising of the Santhal people in 1855–56 against oppressive conditions created by colonial rule and its local agents. The word “diku” referred broadly to outsiders such as moneylenders, zamindars, traders, and officials who were seen as exploiting Santhal communities. Their control over land, unfair loans, high interest, forced payments, and deceptive records threatened the community’s livelihood and independence. Thus, the central idea is economic and social exploitation, not a question of naval discipline, temple entry, or Swadeshi industry.
Option A is correct because the anger against dikus was closely connected with the loss of land and the burden of debt. Moneylenders could use loans and interest to take control of cultivators’ fields, while officials often supported the wider colonial system. The revolt therefore expressed resistance to outside control of land and village life. Option B concerns military organization, option C concerns a later social-religious issue, and option D belongs mainly to the Swadeshi movement. The supplied answer A is historically consistent.