The word that means prepared for action is: C) girt.
Girt is the state of being prepared and ready for action. It could also mean being secured and fastened to prevent being loosened. Synonyms of this word include; engirdle and fortified.
So, of all the options provided, we can conclude that girt means being prepared for action.
Learn more about the dictionary meaning of words here:
https://brainly.com/question/8260485