Question

the muscle in the forehead that raise and lowers the eyebrows is the :
sternocleidomastod
masseter
frontalis
temporalis

Explanation:

The frontalis muscle is located in the forehead. Its main function is to raise the eyebrows and wrinkle the forehead. The sternocleidomastoid is a muscle in the neck that helps with head movement. The masseter is a muscle involved in chewing (closing the jaw). The temporalis is also involved in chewing (elevating and retracting the mandible). Since the question is about the muscle in the forehead that raises and lowers (in combination with other muscles like the corrugator supercilii for lowering to some extent, but frontalis is key for raising which is a main action related to the question's description) the eyebrows, the frontalis is the correct answer.

Answer:

frontalis