Producers use advertising primarily to

Producers use advertising cause it just brings and attracts customers to your business and increases your sales. When consumers see a good looking and positive advertisement they will be more disposed to buy.

seeing as no choices were provided, i'll do my best to answer it from knowledge.

job specialization promotes work ethic to the person doing the job. he/she may be strong in the arms and able to lift things, specializing him/her in a job where you lift and carry.