In the following question, out of the four alternatives, select the alternative which is the best substitute of the words/sentence.
The quality or state of being exposed to the possibility of being attacked or harmed
The word vulnerability means the quality or state of being exposed to the possibility of being attacked or harmed, either physically or emotionally.$
The other words mean:$
Vigour - physical strength and good health.$
Fortitude - courage in pain or adversity.$
Clout - a heavy blow with the hand or a hard object$