Answer: Too much empathy impedes proper social functioning and causes increased stress levels.
Explanation:
Empathy is a good attribute as it shows a person is sensitive to those around him and can recognize someone else is going through pain. An empath is able to sense another person's pain and could step in if within his power.
Some however, are hyper-empaths. This condition is characterized by a person loosing themselves in the suffering of others, feeling guilty for the suffering even though the cause had nothing to do with them. This causes them to function less properly socially and could even be breeding a mental breakdown.
Too much empathy simply punishes two parties for the suffering of one person and is of no benefit to both parties involved.
What he is saying is mostly an opinion, but can also be a fact. If he is claiming that soccer is the most popular sport in the world, the most logical answer would be A.), as in it supports his claim the strongest.