Question

1. the transcript of facebook founder mark zuckerberg testifying before the us congress in april 2018 would be considered what type of source?

primary
secondary
key witness
ancillary

Explanation:

A primary source is an original document or record created at the time of an event. The transcript of Mark Zuckerberg's testimony is a direct, original record of the event (his testimony before Congress in 2018), so it is a primary source. Secondary sources interpret or analyze primary sources, "key witness" refers to a person (not a source type), and "ancillary" is not a standard source type for this context.

Answer:

A. primary