Answer:
C. Exposure
Explanation:
Exposure is the extent to which a person's sensory receptors are capable of registering a stimulus. The stimulus must be within the range of people´s sensory receptor to be noticed. People believe that they can buy product with the message which they can´t see, as it may persuade them to buy the product, however, there is no evidence of it. They message which we can´t see have no effect on perception of customer.
