Identify the portion that contains a compound subject from the following sentence. Select the correct answer. During the 1940s and 1950s, Bud Abbott and Lou Costello were popular comedy team on radio, television and stage.

a) 1940s and 1950s
b) Bud Abbott and Lou Costello
c) radio, television, and stages
d) none

b) Bud Abbott and Lou Costello

The portion that contains a compound subject in the given sentence is:

b) Bud Abbott and Lou Costello

The compound subject in the sentence is "Bud Abbott and Lou Costello." To identify it, you can look for the part of the sentence that includes multiple subjects joined by a conjunction (in this case, the conjunction "and"). In the given sentence, "Bud Abbott and Lou Costello" are two subjects joined by "and". Therefore, the correct answer is b) Bud Abbott and Lou Costello.