Find the part of the given sentence that has an error in it. If there is no error, choose 'No error'.
Mountain biking have always attracted non-conformists and strong personalities.

Option (d) contains an error.
Explanation:
1. The subject "Mountain biking" is singular, so the plural auxiliary verb "have" is incorrect.
2. The singular verb "has" should replace "have" to maintain subject-verb agreement.
3. The rest of the sentence is grammatically correct.
Hindi Explanation: "Mountain biking" एकवचन है, इसलिए "have" के स्थान पर "has" का उपयोग होना चाहिए। Corrected sentence: Mountain biking has always attracted non-conformists and strong personalities.