Final answer:
The correct answer to the question of which muscle is responsible for plantar flexion and eversion of the foot is the C) Fibularis longus.
Step-by-step explanation:
The muscles involved in plantar flexion and eversion of the foot are located in different compartments of the leg.
The lateral compartment houses two important muscles responsible for these movements: the fibularis longus and the fibularis brevis.
The fibularis longus muscle plantar flexes the foot at the ankle and everts it at the intertarsal joints; and the fibularis brevis assists in these actions as well.
Therefore, for the question regarding which muscle is responsible for plantar flexion and eversion of the foot, the correct answer is C) Fibularis longus.