Interviewing friends and family about their jobs and careers is one way of conducting research about your own career options.
a. formal
b. informal
c. secondary
d. primary

The correct answer for the blank is -

b. informal research.

Inormal research can be described as a type of research that is done in an unstructured manner.

In other words, it does not follow any specific protocol or methodology of the research (unlike formal research). Through this pattern, an individual collects information from from his friends, relatives, or family through an un organized and non systematic manner.

Thus, option b) is the right answer.

i think the answer would d