What Is the Most Significant Difference Between a Survey and an In-Depth

Multiple Choice

What is the most significant difference between a survey and an in-depth interview?

A) An in-depth interview is more accurate.
B) A survey cannot use random sampling.
C) A survey is person-to-person and an in-depth interview is online.
D) An in-depth interview is qualitative and a survey is quantitative.
E) An in-depth interview is considered primary research and a survey is secondary.