The answer is B, Elizabeth Van Lew was a successful spy because society did not expect a lady to serve in that role.
<u><em>Explanation:</em></u>
The passage states that Elizabeth Van Lew was suspicious, but the matter never went beyond those suspicions. There was a bias among people that men were better spies and that women should blindly support their husbands, arrange parties, take care of a family, etc...
She was sucessful because society didn't expect a woman to take that role.
