What is the meaning of "well-rounded"?

[Julia]

Business English Lesson, Advanced Level

ESL/EFL Test #143 "Job Advertising", question 9

Advertisements both on niche sites and using more conventional methods are a part of a well- ......... staffing campaign.

(a) centered
(b) loaded
(c) rounded
(d) stated

Business English Lesson, Advanced Level

ESL/EFL Test #143 "Job Advertising", answer 9

Advertisements both on niche sites and using more conventional methods are a part of a well- rounded staffing campaign.

Correct answer: (c) rounded

Your answer was: incorrect
Advertisements both on niche sites and using more conventional methods are a part of a well- stated staffing campaign.
_________________________

What is the meaning of "well-rounded"?

Thanks
Julia

[Conchita]

well-rounded
adjective

involving or having experience in a wide range of ideas or activities:

It's a well-rounded article which is fair to both sides of the dispute.
She describes herself as a "well-rounded person" who works hard but has a varied social life.

(from Cambridge Advanced Learner's Dictionary)