Concept:A demerit of advertising is any negative effect or disadvantage it brings to consumers, producers, or society.
Explanation:Advertising can promote monopoly when big firms use it to drive out smaller competitors.
It can also make buyers purchase goods they do not really need.
High advertising costs are another serious disadvantage to businesses.
These are all true demerits of advertising.
However, an increase in profit is a major benefit of advertising to the organisation.
A benefit is not a demerit.
Therefore, the option that is not a demerit is the one that shows a gain to the business.
Answer:C. Increase in profit.