It is always desirable / to listen to the advice
/
(a)
(b)
who have extensive practical experience
(c)
/
No error
(d)
Spot the error in the above sentence. If no error choose (d).

The correct answer is Option A ((a)). [Note: This question was officially cancelled (#) by MPSC in the final key, but this option is selectable for online practice].

Key Points:
• Spotting errors in relative pronoun antecedent agreement and missing antecedent phrasing.
• In the official MPSC Final Answer Key (Set A, Q.51), this question is cancelled/deleted (marked with '#').
• Part (b) ends abruptly with 'to listen to the advice' followed immediately by part (c) 'who have extensive practical experience'.
• The relative pronoun 'who' refers to people, but its immediate antecedent here is 'the advice' (a non-living concept). The necessary human antecedent (e.g., 'of those' or 'of people') was omitted: 'to listen to the advice [of those] who have extensive practical experience.'
• Because the error straddles both part (b) (missing 'of those') and part (c) (improper placement of 'who'), ambiguity arose regarding which single segment contains the definitive error. Consequently, MPSC declared the question cancelled.
• Key Takeaway: The relative pronoun 'who' requires an explicit human antecedent (such as 'those') rather than an abstract noun like 'advice'.