Pls help the study of how the body changes when how people exert force on their muscles is called
-Exercise physiology
-Eccentric Contraction
-Metabolism
-Bioenergetics
It's either A or D but I can't decide!!! Thanks in advance to whoever answers!

When you have proper posture, your back is arched. a. true b. false

9. withdrawal occurs when alcohol is removed from the system after the brain a. adapted to the continued presence of alcohol b. become physically saturated with alcohol c. become impervious to the effects of alcohol d. begun to treat alcohol as a poison

During polarizacion potassium has a blank charge sodium has a blank charge and calcium has a blank charge