Parts of the following sentence are given as options. Identify the segment that contains a grammatical error:

which result in new learning

The correct answer is Option (3) - which result in new learning

The error is in the phrase "which result in new learning".

• "which" refers to "a challenging situation" (singular subject).
• The verb "result" is in plural form, but it should be singular ("results") to match the singular subject.

Final Answer: "which result in new learning" (subject-verb agreement error)