The correct option is D Study the issue of the backward classes
In 1978, a commission was constituted under the chairmanship of B. P. Mandal to study the issue of the backward classes. The commission came to be called the Mandal Commission. Its assignments were: to determine criteria for defining India's "socially and educationally backward classes"; to recommend steps to be taken for the advancement of those classes; to examine the desirability of reserving state and central government jobs for those classes.