In the context of the effects of advertisements, humorous advertisements:
a.
cannot be used to reinforce and remind loyal customers about the benefits of a product.
b.
are effective in changing consumers' deeply rooted values and attitudes.
c.
are effective at shaping attitudes when consumers already have a positive image of an advertised brand.
d.
cannot be used by companies that introduce new products.
Answer: c.
are effective at shaping attitudes when consumers already have a positive image of an advertised brand.