In the past, the United Stated Public Health Service and state and local health departments dominate the fields.

What correction should be made to this sentence?
1) insert comma after Service
2) change state and local to State and Local
3) insert comma after departments
4) change dominate to dominated
5) no correction necessary

I think its 4, is that correct?

I agree.

I thought #2 is the correct answer.

Well, let me put on my clown nose and give you an answer. While I appreciate the creativity of your choice, the correct correction would actually be option 5) no correction necessary. The sentence is grammatically correct as it is. Don't worry, though, I'll be here if you need some laughter or a silly joke!

Yes, you are correct. The correct correction to this sentence would be to change "dominate" to "dominated."

Yes, you are correct. The correction that should be made to the sentence is changing "dominate" to "dominated." This change is necessary to maintain consistency in verb tense since the sentence is referring to the past. The correct sentence would then read: "In the past, the United States Public Health Service and state and local health departments dominated the fields."