7525. The soldier provided his mettle in the battlefield.

✅ The correct answer is option C.
persistence : the fact of continuing in an opinion or course of action in spite of difficulty or opposition.

stamina : the ability to sustain prolonged physical or mental effort.

courage : the ability to do something that frightens one; bravery.

heroism : great bravery.

mettle : a person’s ability to cope well with difficulties.

Synonym of mettle is courage