Answer: The 2nd one, he is doing so through an action, it's not necessarily coming out and saying "He pays attention" it's indicating it through what his actions and thoughts are.
Explanation:
I believe the answer is A., though it's been a while since I read the story.
<span>im·pen·e·tra·ble, Impenetrable, Or A! Hope this helps, !Karma</span>
