The correct options are
A India opposed the oppressive regimes of imperialism and colonialism in the UN.
B India supported the policy of United Nations against racial and colour discrimination.
D India has always supported the UN campaign against terrorism.
Post-independence, India opposed the tyrannical regimes of colonialism and imperialism within the nation and in the UN. It also helped other countries to gain independence from colonial rule. India supported Nelson Mandela in his fight against apartheid. It supported the UN policy against racial discrimination. India also supports the UN resolutions for disarmament. It has also demanded the strictest action against state-sponsored terrorism.