You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).

Q: Paragraph: More UV rays increase skin cancer rates.
 Question: Mona lives in a country that experiences high levels of sunlight. If she moves to a less sunny country, what happens to her chance of getting skin cancer? 
 Choices: A)increases 
B)decreases

A: decreases
****
Q: Paragraph: The closer together the particles in a longitudinal wave are, the greater the amplitude.
 Question: Causing particles in a longitudinal wave to come together causes the amplitude to 
 Choices: A)decrease 
B)increase

A: increase
****
Q: Paragraph: Pigments in the skin act like a filter that can prevent the skin from making vitamin D. As a result, people with darker skin need more time in the sun than people with lighter skin to make the same amount of vitamin D.
 Question: Caucasian Americans have lighter skin than other Americans. Researchers were not surprised to discover therefore, that vitamin D insufficiency among Caucasian Americans is _____ than among other Americans? 
 Choices: A)more prevalent 
B)less prevalent

A:
less prevalent
****