6597. The troops were mobilised to take control of the tensed situation.

✅ The correct answer is option D.
Organised : arrange systematically; order.

Summoned : order (someone) to be present.

Prepared : made ready for use.

Arouse : evoke or awaken (a feeling, emotion, or response).

Mobilised : organize and encourage (a group of people) to take collective action in pursuit of a particular objective.

Synonym of Mobilised is Arouse