Are flexible and allow for explanation of difficult questions as well as demonstrating products, such as taste-testing or watching commercials.

The correct answer is letter "C": individual interviews.

Explanation:

Individual interviews are marketing strategies by which salespeople offer products or services face-to-face as a form of creating a familiar atmosphere with potential customers and to allow them to make all the questions possibles in regards to the product so their concerns can be solved.

C. Individual Interview

Explanation:

Interviews can be defined as a qualitative research technique which involves “conducting intensive individual interviews with a small number of respondents to explore their perspectives on a particular idea, program or situation.

In individual interviews, an interviewer talks with one user for 30 minutes to an hour. Individual interviews allow you to probe their attitudes, beliefs, desires, and experiences to get a deeper understanding of the users who come to your site. You can also ask them to rate or rank choices for site content.

answerembargo;

it's obviously d. it could be c though.