Answer:
The correct answer is False.
Step-by-step explanation:
A fiber muscle is a muscle cell. They are what make up the skeletal muscles and contract when they are stimulated.
A motor unit is composed of a neuron motor and also skeletal muscle fibers, so the answer will be false, since these fibers require the neuron motor that is responsible for stimulating them.
Both will work together to generate a muscle to contract and will be called a motor group.