Identify the segment in the sentence which contains a grammatical error.
The farmers are using HYV seeds so then they can get a better yield.

Correct option is B

The segment in the sentence "The farmers are using HYV seeds so then they can get a better yield" that contains a grammatical error is (b) "so then they can get."

• Explanation: The correct phrase should be "so that they can get." The word "then" is incorrect in this context, as it suggests a sequence of events rather than purpose. The phrase "so that" is used to express the purpose or reason for something.
• Corrected Sentence: "The farmers are using HYV seeds so that they can get a better yield."

This correction ensures that the sentence properly conveys the intended meaning of purpose, making it grammatically correct.