The narrator introduces himself as an "invisible man." He explains that his invisibility owes not to some biochemical accident or supernatural cause but rather to the unwillingness of other people to notice him, as he is black. ... Being invisible sometimes makes him doubt whether he really exists.
<span>The answer is D. An Evolutionary Guide to Animal Species</span>
Answer:
A biker's helmet is often called a brain bucket. Not wearing one is literally, "a no brainer." The pun also implies that one riding a bike without a helmet has no brains.
Explanation: