Which of the following sentences has incorrect subject-verb agreement? a. The peninsula of Korea, which stretches into the sea some 600 miles, lies south of Manchuria.
b. A nation that has been overrun by its larger and more powerful neighbors several times, Korea was split into two separate nations after the war of the early 1950s.
c. Since that time, South Korea's economy, which follows the capitalistic model and enjoys the opportunities that come with free enterprise systems, have been growing steadily.