Definition: 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).
Input: Paragraph: Aerobic exercise increases the size and strength of muscles in the heart and helps all your muscles develop greater endurance.
 Question: What will happen to Jim's muscle strength if he exercises less than he has in the past? 
 Choices: A)his muscles will become stronger 
B)his muscles will become weaker
Output:
his muscles will become weaker