The answer is A. The differences between men and women and their perceptions of each other.
The second answer is the closest.
<span>The Jungle and the Progressive Era. The publication of Upton Sinclair's 1906 novel The Jungle produced an immediate and powerful effect on Americans and on federal policy, but Sinclair had hoped to achieve a very different result.</span>
A metaphor is a comparison which doesn't use the words <em>as </em>or <em>like. </em>So, having that in mind, the correct answer is D) She offered him a hundred-watt smile / a smile which was bright as a hundred watts.