English grammar – Spot the error (choose the segment with the mistake; if there is no mistake, choose ‘‘No error’’). Sentence: “If the teacher is good the students will respond positively to them.”

Introduction / Context:The goal is to detect a pronoun–antecedent agreement error. The singular antecedent “teacher” must be matched by an appropriate singular pronoun or the sentence must be rephrased to avoid the pronoun altogether.

Given Data / Assumptions:

• Antecedent: “the teacher” (singular).
• Pronoun used: “them” (plural).
• Style allows either singular pronouns (him/her) or recasting to a plural antecedent for “they/them”.

Concept / Approach:

• Traditional grammar: singular antecedent needs a singular pronoun (“him”/“her”).
• Alternative: modern singular “they” is accepted in many contexts, but tests like this typically expect classical agreement.
• Another fix is to make the antecedent plural: “If teachers are good, students will respond positively to them.”

Step-by-Step Solution:

Verification / Alternative check:

Why Other Options Are Wrong:

Common Pitfalls:

Final Answer: