Answer:
Finding subject-verb agreement error:
1. Incorrect verb = are
2. Correct verb = is as follows:
"The jackfruit, the largest tree fruit in the world, is known for its size and for its strange musky smell."
Explanation:
In the sentence, "The jackfruit the largest tree fruit in the world are known for its size and for its strange musky smell," the subject-verb agreement error is with the verb 'are' which should be 'is.' Since the subject, jackfruit, is singular, the verb must also be singular to ensure concord.