An 82 year old man has woken up with incoherent speech and difficulty in finding the right words. Examination: otherwise normal, good comprehension. Which anatomical site is most likely to be affected?

The key is A. Broca’s area. [A person with expressive aphasia will exhibit halting and effortful

speech. Speech may only include important content words. Word comprehension is preserved. The

person may still be understood, but sentences will not be grammatical. This contrasts with receptive or

Wernicke’s aphasia, which is distinguished by a patient's inability to comprehend language or speak with

appropriately meaningful words though fluency may be preserved].