If a company produces something and is able to dominate the market as a result, that company would be called:

A. a sponsor.

B. a Dominant Client.

C. a Monopolistic Maker.

D. a manufacturer.

is it B

Probably not.

http://wiki.answers.com/Q/Difference_between_a_dominant_client_and_a_dominant_regulator

so answer is D

I vote for C.

No, the correct answer is not B. The term "Dominant Client" does not accurately describe a company that dominates the market by producing something.

The correct answer is C. a Monopolistic Maker. This term refers to a company that holds a monopoly or dominant position in the market due to its successful production and control over the market for a particular product or service.