Under civil service system introduced by Lord Cornwallis, the Indians could be selected for _____.

The correct option is B Subordinate posts
Indian Civil Services was the elite higher civil service of the British Empire in British India. The civil services were reformed and modernised by Lord Cornwallis. There were many functions to be performed by them - revenue collection, law and order, justice delivery, etc. However, these functions were of strategic interests of the Company and Indians were not allowed at the higher administrative posts and remained subordinate to their British counterparts.