OG详解-OG5 文法 Q17

Choice A is the best answer. The convention being tested is pronoun-antecedent agreement. The plural pronoun “them” agrees in number with the plural antecedent “utensils.”
Choice B is incorrect because the singular pronoun “this” doesn’t agree in number with the plural antecedent “utensils.” Choice C is incorrect because the singular pronoun “that” doesn’t agree in number with the plural antecedent “utensils.” Choice D is incorrect because the singular pronoun “it” doesn’t agree in number with the plural antecedent “utensils.”