Name the pair which contain like terms.
a. b. c. d. e.
Here we have to choose that pair that contains like terms.
In (a) is not like terms because it does not have the same literal factor.
In (b) is not like terms because it does not have the same literal factor.
In (c) is like terms because it has the same literal factor.
In (d) is like terms because it has the same literal factor.
In (e) is not like terms because it does not have the same literal factor.
Hence the (c) and (d) contain like term.