Read the text and choose the correct answer to the question.

Look at this sentence from near the end of the article. It is presented here in two parts:
“To avoid minor but painful conditions such as blisters or even splits or athlete’s foot \(fungal infections\),…” \(first part\)
“…the shoe must allow evaporation of perspiration and must prevent outside dampness from getting in.” \(second part\)
What is the relationship between the first and second parts of the sentence?

• It gives the solution to the problem described in the first part.
• It contradicts the first part.
• It repeats the first part.
• It illustrates the problem described in the first part.