Of the Following, Who Has a Speech Pattern Comparable to That

Of the following, who has a speech pattern comparable to that of Paul Broca's research subject Leborgne?

A) Dan speaks rapidly and fluently and with good grammar, but his speech is virtually meaningless.
B) Ashley has a moderate level of intellectual disability, but her speech is fluent and she has a large vocabulary for her age.
C) Erica has severe difficulties with the production of language, though she is otherwise healthy.
D) Diego speaks very slowly and with much effort, but his speech generally makes sense.