Spot an error in the given sentence. (A) The class of aptitude placement / (B)…

Concept: A pronoun must agree in number with its antecedent — a singular noun (such as class, team, or committee treated as one unit) is referred to only by a singular pronoun ('it'/'its'), never by a plural one ('they'/'their').

Application: In this sentence the subject 'class' is singular, and it is the antecedent of the pronoun used later in the sentence. Segment (C) — 'their branch' — uses the plural possessive 'their' to refer back to the singular 'class', breaking the agreement rule; it should read 'its branch'.

Cross-check: The other three segments each hold up against the same rule:

• (A) 'The class of aptitude placement' is a plain noun phrase naming the singular subject — no pronoun to check, no error.

• (B) 'does not have' — the singular verb 'does' correctly agrees with the singular subject 'class'; no error.

• (D) 'anywhere else in India' is a plain adverbial phrase with no pronoun or verb agreement to check; no error.