I think the correct answer from the choices listed above is the first option. If you want to improve your muscular strength, then the best plan would be to make low resistance with high reps. Hope this answers the question.
Answer:
your answer would be sinus node (also called the sinoatrial node, or SA node).
Explanation:
All of the above . because of today society
Space that's my best guess
If you want to study and do well look over everything you did within the unit and have someone quiz you on some questions.