Question

click on the subject of this sentence.
despite a growling stomach, elvira, decided against the ice cream sundae.

Explanation:

The subject of a sentence is the noun that performs the action. Here, "Elvira" is the one making the decision (the action "decided"), while "stomach" is part of a prepositional phrase and "ice cream sundae" is the object of the preposition "against".

Answer:

Elvira