Assertion: Most parties of the NDA agreed with the ‘Hindutva’ ideology of the BJP. So, they came together to form a government and remained in power for a full term from 1999-2004.

Reason: Coalition politics have shifted the focus of political parties from ideological differences to power-sharing arrangements.

The Assertion is incorrect but the Reason is correct.

There is an emphasis on pragmatic considerations rather than ideological positions and political alliances without ideological agreement - coalition politics have shifted the focus of political parties from ideological differences to power-sharing arrangements. Thus, most parties of the NDA did not agree with the ‘Hindutva’ ideology of the BJP. Yet, they came together to form a government and remained in power for a full term.