Muscular strength is best described by
a. the ability of a muscle to contract repeatedly
b. the average metabolic efficiency of muscles
c. force produced in a single match my effort
d. daily levels of physical activity and exertion

C.

the force produced in a single maximum effort

Explanation:muscular strength is not defined by the amount of work one can do or the load that one can carry fitness scientists give it a deeper meaning that .

They say it depend on the maximum force one can exert at that particular moment in order to be able to carry a certain load or tolerate a certain exercise.

All of these depends on individual producing a maximum muscle force for that particular situation .

It does not depend on how strong or less strong onr looks on the outside eventhough exercising may play a role in being able to produce a maximum muscle force.