If sonya has a high resting metabolic rate, she probably a) performs regular resistance training b) has a well conditioned heart muscle c) has small skeletal muscles d) is inactive

I think the best answer is the first option. If Sonya has a high resting metabolic rate, she probably performs regular resistance training. Metabolic rate is a measure of the amount of energy that a person requires to keep the body functioning when at rest. It is  expressed in calories.
Hope this helps