Step 1: Separate the two main language hubs. The expressive (output) centre lies in the frontal lobe, while the receptive (comprehension) centre lies in the temporal lobe. Broca's area is the expressive one.
Step 2: Pinpoint it to the pars opercularis and pars triangularis of the inferior frontal gyrus in the dominant hemisphere, corresponding to Brodmann area 44/45. So the inferior frontal gyrus is the location asked for. A lesion produces halting, telegraphic speech with intact understanding.
Step 3: Reject the alternatives. The superior temporal gyrus is Wernicke's territory, where lesions cause fluent but meaningless speech. The angular gyrus serves reading and writing. Since the inferior frontal gyrus is clearly correct, 'none of the above' is also wrong.
\[\boxed{\text{Inferior frontal gyrus}}\]