Benny has been reviewing the sales numbers on the newest popsicle line. For some reason, they aren't selling as well as anticipated. At first he thought it was the colour but now he isn't so sure that the flavours are working out. What type of research should Benny use to clarify his problem?

Select one:

a.

Impactful research

b.

Statistical research

c.

Quantitative research

d.

Qualitative research