In this option, you'll encounter a scenario where two or more heads appear in a sentence, and you'll need to decide which one to agree with. Sounds simple, right? Wrong.
For example: "The cat chased the rat, but the dog also did." Which verb does the subject agree with? The cat, the rat, or the dog? It's a real head-scratcher.
Go to Option 2: The Sudden Disappearance of Singulars