Terry's speech is slow and labored. He makes errors in the pronunciation of words. He tries to correct the errors and often gets frustrated as he attempts to speak. He knows what he is trying to say. He has little inflection (tonal variation) in his speech. His comprehension is normal except for some grammatically complex material.

The correct answer is - Broca's area is the part of the brain most likely injured.

Explanation:

Terry's speech is slow, labored, and makes pronunciation and having tonal inflection or variation in his speech. He also makes usual grammatically complex material.

The left side of the brain is a part of the brain associated with speech and language to be specific it is Broca's area that can lead to all the symptoms Terry's have.