Answer: Identify if communications are effective.
Explanation:
Identify if customer needs are being met is when market research sis used to make necessary adjustments to products so that customers needs can be met and they can be satisfied with the good.
Identify value is when marketing research is used to know how a particular product will perform in the market.
Identify threats and investigate the competition is using market research to know how ones competitors are doing.
Therefore, the use of market research that allows for businesses to evaluate the results of the advertising is the identification to know the effective communication.