Which sentence displays correct subject-verb agreement? The cattle in the field is huge! The books at the library is very helpful. The island visited by the travelers are warm. My collection of stamps is extensive.

My collection of stamps is extensive.

The sentence that displays correct subject-verb agreement is: "My collection of stamps is extensive."

The sentence that displays correct subject-verb agreement is "My collection of stamps is extensive."

To determine the correct subject-verb agreement, you should look at the number of the subject noun and ensure that the verb matches in number (singular or plural).

In the given sentences:

1. "The cattle in the field is huge!" - This is incorrect because "cattle" refers to multiple animals, so the verb should be plural. The correct form should be "The cattle in the field are huge!" to maintain subject-verb agreement.

2. "The books at the library is very helpful." - This is incorrect because "books" is a plural noun and should be paired with a plural verb. The correct form should be "The books at the library are very helpful."

3. "The island visited by the travelers are warm." - This is also incorrect because "island" is a singular noun, so the verb should be singular. The correct form should be "The island visited by the travelers is warm."

4. "My collection of stamps is extensive." - This is the correct sentence. "Collection" is a singular noun, and the verb "is" correctly matches it in number.