The correct options are
A India remained neutral and followed the non-alignment policy during the Cold War.
C Post the Cold War, the relation between the US and India has improved remarkably, attracting investments and receiving aid from the US.
D The Civil Nuclear Agreement, signed in 2005, further strengthened the relations between the two countries.
India's relation with the USA has changed post the Cold War. During the Cold War, the USA supported Pakistan and sided with Pakistan in Kashmir related issues. In 1972 Indo-Pak war, the USA was ready to provide support to Pakistan in the war. Post the Cold War, the relations of the USA with India has seen a turnaround. India opened the markets to improve its trade and promote foreign investments. The USA became one of the important contributors to India's economic growth. The Civil Nuclear Agreement signed in 2005 further strengthened the relations between the two countries. Since then, India has maintained friendly relations with the United States.