Mariah has suffered damage to the left frontal lobe of her brain. When she tries to speak, she struggles to produce words and is unable to say them correctly. Mariah has sustained injury to the:

Broca's area

Answer;

-Broca's area

Explanation;

-Broca's area is a region in the frontal lobe of the dominant hemisphere, usually the left, of the hominid brain with functions linked to speech production. The Broca area is connected to other regions of the brain, including the Wernicke area, by a neuronal tract known as the arcuate fasciculus.

-In addition to serving a role in speech production, the Broca area also is involved in language comprehension, in motor-related activities associated with hand movements, and in sensorimotor learning and integration.

-Damage to the frontal lobe can result in a speech disorder known as Broca aphasia, which is characterized by deliberate, telegraphic speech with very simple grammatical structure, though the speaker may be quite clear as to what he or she wishes to say and may communicate successfully.