Answer:
Because they are not working together
Explanation:your welcome
I choose to list two. The two that form the basis are evergreens and broadleaf trees.
The answer is A, anti-fungal drugs.
According to the passage, "but if the problem persists, see a doctor who can prescribe anti-fungal drugs". In additional, at the beginning of the passage, it already stated that athlete's foot is caused by a fungus, so we can sure that the answer is A.