Question

Bacon and eggs are an all-time American breakfast favorite that satisfies the hungriest krumper.How should the sentence above be rewritten to correct the subject-verb agreement error?

Answer 1

The correct option about how this sentence should be rewritten to correct the subject-verb agreement error is Bacon and eggs is an all-time American breakfast favorite that satisfies the hungriest krumper. 
The verb refers to breakfast, that is why it should be singular, not plural. 

Answer 2

In order to correct the subject-verb agreement error the sentence should be written like this: Bacon and eggs is an all-time American breakfast favorite that satisfies the hungriest krumper.

Subjects and verbs must agree with one another in number (singular or plural).  Thus, if a subject is singular, its verb must also be singular; and if a subject is plural, its verb must also be plural.

In this particular case, the verb refers to breakfast, that is why it should be singular, not plural.