India has too often to fulminate against Pakistan's role in aiding and abetting acts of militancy on her soil.

Answer: Option D

Think : have a particular belief or idea.
Consider : think carefully about (something), typically before making a decision.
Conspire : make secret plans jointly to commit an unlawful or harmful act.
Protest : a statement or action expressing disapproval of or objection to something.
Fulminate : express vehement protest.

Synonym of Fulminate is Protest