Question

select the version in this works cited entry. origin and evolution of the universe: from big bang to exobiology. edited by matthew a. malkin and ben zuckerman, 2nd ed., wspc, 2020.

Explanation:

In a Works Cited entry, the version is indicated by the text that shows the edition number. Here, "2nd ed." clearly represents the version of the book.

Answer:

2nd ed.