Mandy amp; Co. have spent $10,000 on its advertising campaigns. The company wants to analyze how the advertising campaign has affected sales.

Mandy & Co. have spent $10,000 on its advertising campaigns. The company wants to analyze how the advertising campaign has affected sales. Which of the following types of research can researchers at Mandy & Co. conduct to assess the influence of advertising on sales? 

Select one:

a. ethnographic research

b. preliminary research

c. descriptive research

d. exploratory research

e. causal research