Question

which of the following best describes a tertiary source? a collection of data on a certain topic a first hand account a second hand account

Explanation:

Tertiary sources synthesize or compile information from primary and secondary sources. A "collection of data on a certain topic" (like encyclopedias, databases, or compilations) fits this. A first - hand account is a primary source, and a second - hand account (analyzing/retelling primary info) is a secondary source.

Answer:

a collection of data on a certain topic