The following sentence has been split into four segments. Identify the segment tht contains a grammatical error.
Both Reeta and Ronika/has won /the dance competition /this year.

Correct option is D

The correct option is (d) has won - The verb "has won" is not in agreement with the subject "Both Reeta and Ronika". It should be "have won". Therefore, the segment containing the grammatical error is "has won".