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).

Paragraph: A sunscreen with a higher SPF value protects the skin longer.
 Question: John was analyzing some of the results from his sunscreen study. He found that a higher SPF protects the skin 
 Choices: A)Shorter 
B)Longer
Longer

Paragraph: A higher-frequency wave has more energy than a lower-frequency wave with the same amplitude.
 Question: A wave with more energy than another will have a _____-frequency. 
 Choices: A)lower 
B)higher
higher

Paragraph: A: The more carbon atoms there are, the greater the number of possible arrangements of carbon atoms.
 Question: When there are a lot of carbon atoms in something there are 
 Choices: A)many options 
B)few options

many options