Which sentence demonstrates correct subject-verb agreement?

Question

A.
The United States has been Petrie's home for many years.
B.
Dieter visit Moscow, Paris, Milan, and London every summer.
C.
The student with all the books walk very slowly to class.
D.
Employees is allowed several breaks during their shifts.

Answer 1

The sentence that demonstrates correct subject-verb agreement is:

A. The United States has been Petrie's home for many years.

In this sentence, "The United States" is treated as a singular noun, and "has" is the correct singular verb form.