If you are dissecting and want to isolate a skeletal muscle by separating it from nearby muscles, the connective tissue that you would have to tease through is:

(A well thought out answer) --- The answer is of course, B because a scientific law is something that is a generalization, rather than an explanation like a theory is. Theories are sets of explanations, basically, and laws are generalizations. C would be wrong because, yes they may be modified, they're not always modified constantly. D is wrong because nothing in science is done without experimentation.