27.

Answer and Explanation

Your Answer is

Correct Answer is A

Explanation

Item A: that guides the attributive clause to modify the antecedent one, and that acts as the subject in the definite clause.

Item C: Attributive clauses cannot be guided by this.

Item D: whom modifies people, here one, D is wrong.

Item B: Values ??is a verb, and whose is followed by a noun.