Final answer:
Type IIb (Type IIx or Type IId) muscle fibers are primarily responsible for the majority of the force production in muscles, producing a greater amount of force rapidly and are suited for short, anaerobic bursts of activity.
Step-by-step explanation:
The question asks what is responsible for the majority of maximum force production in muscles, with a particular focus on the difference in force production between small and large muscles. The most likely answer to this question is Type II muscle fibers, which include Type IIa and Type IIb (also known as Type IIx or Type IId) fibers. These fibers are responsible for high-power, fast-twitch contractions found primarily in sprinters and athletes requiring quick explosive movements. However, among the options provided, Type IIb muscle fibers (option c), also known as Type IIx, are capable of producing a greater amount of force very rapidly, but they fatigue quickly as well, making them pertinent for short bursts of activity.