The correct option is D Prime Minister
The
President can dissolve the Lok Sabha on the advice of Council of Ministers. As
the Prime Minister is head of the Council of Ministers and represent the
council of Ministers to President, then the president can dissolve the Lok
Sabha on the advice of prime minister. Our constitution also states that the
president will act on the advice of Prime minister and his council of ministers. It means
he can dissolve Lok Sabha if Prime minister recommends him to do so.