Answer: c. promote goodwill toward beer drinkers.
Step-by-step explanation:
The purpose of this campaign is to increase the the appreciation of beer and its industry in the minds of people.
This will therefore promote goodwill towards beer drinkers as they will be less ostracised if people appreciate beer more.
This is good for the beer industry because it would increase sales when people who were worried about their pubic image become less worried and drink more.