Henry says that holding back his opinions at such a critical moment in the country’s history would be akin to select all that apply. cowardice sacrilege terrorism treason

We have to answer to this question from the given options. The question concerns the correct selection of a suitable word. The answer is not terrorism because it could be relevant with something related to attack or something similar. However, the question looks like Henry is in the position of defense. The correct answer is not sacrilege, as well. We cannot yield that there is something sacred mentioned in the question. Between the options cowardice and treason, suitable answer is the former one - cowardice. Indeed, holding back your opinions mean that you are afraid of.  

the answer is b