Teacher: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).
Teacher: Now, understand the problem? Solve this instance: Paragraph: The closer together the particles in a longitudinal wave are, the greater the amplitude.
 Question: Causing particles in a longitudinal wave to move further apart causes the amplitude to 
 Choices: A)decrease 
B)increase
Student:
decrease