What type of exploratory research design (observation, projective technique, in-depth interview, focus group, case study, ethnography, netnography, ZMET) would you suggest for each of the following situations and why?
a. A jewelry retailer wants to better understand why men buy jewelry for women and how they select what they buy.
b. An owner of a McDonald's store is planning to build a playland and wants to know which play equipment is most interesting to children.
c. Victoria's Secret wants to better understand women's body images.
d. The senior design engineer for the Ford Motor Company wishes to identify meaningful design changes to be integrated into the 2008 Ford Taurus.
e. Apple wants to better understand how teenagers discover and choose popular music to download.
f. Nike wants to better understand the concepts of customization and personalization to support the online product customization services provided by NikeID.