Correct Option: A

Amitabh Bachchan, one of the most prominent figures in the history of Indian cinema and a powerful advocate for children, was appointed a UNICEF Goodwill Ambassador in April 2005.Mr. Bachchan has made the eradication of polio a particular focus of his work with UNICEF. In his personal blog, he seeks to raise awareness about the importance of polio immunization to protect children against this debilitating disease and ensure that their rights to education, health care and protection are respected.
Note: In December 2016 Actress Priyanka Chopra, appointed as UNICEF’s newest global Goodwill Ambassador. My wish for children is freedom. The freedom to think, the freedom to live,” Chopra said, addressing top UN diplomats, UNICEF Goodwill Ambassadors and children at the event.