<span>the one that is NOT a factor in efficiency is: D. digestion
highest effiiency refer to a condition when your body is capable to perform with a great result with the least amount of effort.
Digestion does not necessarily infliuence the musle movement in your body and therefore could not be considered as one of the factors</span>
C. Trans fat, as it raises LDL (bad) cholesterol levels and lowers HDL (good) cholesterol levels.
It also increases your risk of developing a heart disease, getting a stroke and Type 2 Diabetes.
I would say C. They are making a cry for help
It's part of the brain stem,
D. having trouble relaxing