decreasing his respiration rate increasing his perspiration rate increasing the rate his heart beats decreasing the rate his blood flow
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: When Javier exercises, his muscle cells need more oxygen. Which would help Javier's muscle cells receive more oxygen?
Possibilities:
- decreasing his respiration rate
- increasing his perspiration rate
- increasing the rate his heart beats
- decreasing the rate his blood flow

increasing the rate his heart beats