The answer to the question is C. allow, prohibit.
These two are the only 'action words' in the sentence.
The answer is D: After some soul-searching and introspection, Peter knew that it was time for him to move on.
Introspection is the action of self-reflection, that is to say, internal observation of one´s own state of mind. This kind of intra-personal observation can yield insights about one´s own corporeal, sensitive, cognitive and emotional states. It is contrasted to external observation of objects as different and external to the mind.
B is the answer i chose because i thinks it best fits the question
