Answer:
changing the perceived importance of a specific attribute.
Explanation:
Pepsi-Cola made freshness an important product attribute in cola by using dates stamped on their cans and advertising and promotion. (Prior to doing so, few consumers considered freshness a relevant issue for soft drinks.) As a result of the campaign, 61 percent of cola drinkers believed freshness dating was an important attribute. By this, Pepsi-Cola has tried to change consumers' attitudes toward its soft drinks by changing the perceived importance of a specific attribute, which is freshness.