Answer:
at its typical resting length.
Step-by-step explanation:
Muscle fibers are elongated cells that can have one or more nuclei. They will form muscle tissues, which can be of three types: striated cardiac muscle, skeletal striated muscle or smooth muscle, each having its own functional and morphological characteristics. However, these types of muscle fibers have in common the ability to generate movement by contraction.
Contraction occurs at the moment of maximum tension of these muscle fibers and a muscle fiber develops its maximum tension when it is at its typical resting length before being stimulated.