True, if you are 50 and time your age by BMR
Motor Unit Summation<span> - the degree of contraction of a skeletal muscle is influenced by the number of </span>motor units<span> being stimulated (with a </span>motor unit<span> being a </span>motor<span>neuron plus all of the muscle fibers it innervates; see diagram below).</span>
The term that is false would be B.
Betty should not go swimming immediately, the waters might not be safe and if she is alone, no one would be able to help her if something went south.