Choose the most appropriate alternative from the options given below to complete the following sentence: Suresh’s dog is the one _________ was hurt in the stampede.

In restrictive relative clauses referring to an animal, both "that" and "which" (and sometimes "who" when pets are personalized) can be considered acceptable depending on standard vs. colloquial grammatical conventions. Because of ambiguity regarding restrictive relative pronoun selection for domestic animals, full marks were awarded to all candidates in the official answer key.