Given the question: Read the passage below and choose the right answer to the following question (choices are his muscles will become stronger or his muscles will become weaker ): Aerobic exercise increases the size and strength of muscles in the heart and helps all your muscles develop greater endurance. What will happen to Jim's muscle strength if he exercises more then he has in the past his muscles will become stronger or his muscles will become weaker?
The answer is:
his muscles will become stronger