The correct answer is a.: specific.
This structure (this +adj) requires an adjective and the only adjective is in a., the other options are verbs or nouns and are not correct.
The colonists wanted to be free from Britain and that's led to their decision to fight against the British rule.
The Most Dangerous Game” is the story of Rainsford's transformation of perspective. He begins by having no sympathy with animals—or prey—and ends up experiencing precisely what the prey does when being hunted. But Rainsford can be a little frustrating as a narrative voice.
