Final answer:
The tibialis posterior muscle shares an insertion site with the tibialis anterior and helps to lift and support the arches of the foot. The correct option is (C).
Step-by-step explanation:
The muscle that shares an insertion site with the tibialis anterior to lift and support the transverse and medial longitudinal arches of the foot is the tibialis posterior.
The tibialis posterior is responsible for plantar flexion and inversion of the foot, playing a crucial role in maintaining the arches of the foot.
This muscle, along with the tibialis anterior, helps in stabilizing and supporting the foot during activities that involve movement and load-bearing.