Question

the ______ is a large opening at the base of the skull through which the brainstem connects to the spinal cord.

○ supraorbital foramen
○ foramen magnum
○ external acoustic meatus
○ jugular foramen

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Explanation:

The foramen magnum is the large opening at the base of the skull that allows the brain - stem to connect to the spinal cord. The supraorbital foramen is above the eye, the external acoustic meatus is the ear canal, and the jugular foramen is related to blood vessels and nerves, not the brain - stem to spinal cord connection.

Answer:

B. foramen magnum