Solid milk and solid food
The cell cycle, or cell-division cycle, is the series of events that take place in a cell leading to its division and duplication of its DNA (DNA replication) to produce two daughter cells.
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.