Find the part of the given sentence that has an error in it.
Neither Prerna nor Vishaka understand the meaning of friendship.

Option (a) contains an error.
Explanation:
1. The subject of the sentence "Neither Prerna nor Vishaka" is singular, so the verb must be singular.
2. "Understand" should be replaced with "understands" to maintain subject-verb agreement.
3. Singular verbs are required after "neither...nor" constructions when both subjects are singular.
Hindi Explanation: "Neither...nor" का उपयोग एकवचन के लिए होता है, इसलिए "understand" के स्थान पर "understands" का उपयोग करें।
Corrected Sentence: Neither Prerna nor Vishaka understands the meaning of friendship.