meaning of convince

[Lusen]

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #42 "Consider this", question 1

The most difficult part for the salesperson is to ......... potential customers of the usefulness of the product.

(a) consider
(b) convince
(c) contract
(d) confirm

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #42 "Consider this", answer 1

The most difficult part for the salesperson is to convince potential customers of the usefulness of the product.

Correct answer: (b) convince
_________________________

what do they mean?

Lusen

[Mister Micawber]

.
Try a good DICTIONARY.
.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber