Answer:
A. ad hominem
Step-by-step explanation:
In this passage, the author uses the ad hominem fallacy. Ad hominem arguments don't talk about the issue at hand. Instead, they attack the other person's character.
The author questions the credibility of Schliemann's supporters by saying they "fell for Schliemann's made-up stories" instead of facing the problem head-on.
This type of logical fallacy involves attacking a person's character instead of focusing on the validity of their reasoning.