The correct answer here is definitely A.
The excerpt shows the wilderness it is dog eat dog world and the only the strongest will survive. This is even explicitly said in the sentence:
<span>The
blood-longing became stronger than ever before. He was a killer, a
thing that preyed, living on the things that lived, unaided, alone, by
virtue of his own strength and prowess, surviving triumphantly in a
hostile environment where only the strong survived.
</span>
<span></span>The wilderness does not care and it is a hostile environment and if you want to survive you have to strong.
<span />
The correct answer is key ideas or key points. Key ideas are the ideas that are emphasized through repetition. These ideas are repeated because it needs to be emphasized in order to be understood clearly. Repeated ideas may include a word or phrases. In addition, repetition is also used to persuade or convince the readers.
The primary problem is the greenhouse effect. Greenhouse effect is when some gases (including CO2) absorbs some portion of sun's heat to make the atmosphere warm to support life. But when the amount of CO2 etc. increases in the atmosphere, it heats up more than it is required. So, by limiting CO2 emission, we can solve this problem.
the answer to this question of yours would be caring
