Answer:
The correct answer is option 4. cerebellum.
Step-by-step explanation:
The cerebellum gets information from the sensory system, the spinal cord, and different pieces of the brain and afterward regulates motor movements. The cerebellum organizes voluntary developments, for example, balance, posture, coordination, speech, and balanced muscular activities.
It also deals with the short term or implicit memory. If Sara injured her head and found having difficulty with balance and implicit memories. Sara probably damaged her cerebellum.
Thus, the correct answer is option 4. cerebellum.