Final answer:
Broca's aphasia is caused by damage to Broca's area in the left hemisphere of the brain. This area is located in the frontal lobe and affects speech production, resulting in difficulty in forming meaningful language and using short, simple words.
Step-by-step explanation:
Broca's aphasia is caused by damage to Broca's area in the left hemisphere of the brain. This area is located in the frontal lobe, specifically, in the lateral aspect of the frontal lobe just anterior to the region of the motor cortex associated with the head and neck. Broca's aphasia primarily affects speech production, resulting in difficulty in forming meaningful language and using short, simple words. It is also characterized by broken or halting speech and impaired grammar.