Question

which of the following is an example of a tertiary source?
an encyclopedia on british history
a play by lorraine hansberry
an article about shakespeares work

Explanation:

Tertiary sources summarize, compile, or index primary and secondary sources. An encyclopedia (on British history here) synthesizes information from other sources. A play (by Lorraine Hansberry) is a primary source (original creative work), and an article about Shakespeare’s work is a secondary source (analyzes/interprets primary sources like his plays). So the encyclopedia is a tertiary source.

Answer:

A. an encyclopedia on British history