A participle, a gerund, or an infinitive May be used as a noun substitute. The infinitive functions either as an adjective or as a noun.
The correct answer should be gargoyle as it is the only thing mentioned here that might be hunted by a hunter.
I would say B and D also. A and C make no sense and are irrelevant. Keep using deductive reasoning and have a good day!
<span>A)focus on an aspect of the theme</span>