Which word in the sentence is the indirect object?
after the show, the performers made themselves a delicious dinner. a. themselves b. dinner c. performers d. show

The answer it's variant A.themselves because it's an indirect object in dative case

When you clear away all the ornaments, decorations, and cobwebs,
the sentence says  "Performers made dinner."

Subject = performers
Predicate = made
Direct Object = dinner.

An indirect object in a sentence is quite rare.  If there is one, then it's
who or what gets the direct object.  In this sentence, "themselves"
get the dinner, so "themselves" is the indirect object.