Final answer:
The ocular movements are primarily controlled by cranial nerve III, the oculomotor nerve.
Step-by-step explanation:
The ocular movements are primarily controlled by cranial nerve III, which is the oculomotor nerve. It innervates all the extraocular muscles except for the lateral rectus (controlled by the abducens nerve) and the superior oblique (controlled by the trochlear nerve). The oculomotor nerve is also responsible for controlling the levator palpebrae superioris muscle.
In summary, the correct answer is option 3) Cranial Nerve III.