Critical Reasoning (CR) | The popular belief that to be eloquent a person needs a vast vocabular

The popular belief that to be eloquent a person needs a vast vocabulary is wrong.
On the contrary, people with large vocabularies have no incentive for, and tend not to engage in, the kind of creative linguistic self-expression that is required when no available words seem adequate.

Which one of the following is an assumption made in the argument?

A When people are truly eloquent, they have the capacity to express themselves in situations in which their vocabularies seem inadequate.
B People
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