Answer:A. is challenging but still allows for proper form
Explanation:
When you want to increase strength you don't want to exhaust yourself but still you want to challenge yourself out of your comfort zone in a proper way.
You building muscles but you still want to ensure consistency without burning out.
Strength exercises challenges your ability to endure, for example holding a plank challenges your whole body and how long can you endure the position.
At the same time you have to do it properly to ensure that you obtain the right results .
If you don't hold it properly you may injure yourself or not get the desired results .
Answer:
1000000000 nanoseconds ( in standard form )
hope this answer helps you!
I believe the answer is D) a social movement.
