In each of the following questions, a sentence is given, in which four words are highlighted as (

• A , (
• A framework to curb (
• B , (
• B practices that had been consistently (
• C , and (
• C undermining market integrity (
• D . You are required to identify which of the given pairs of words, when interchanged, will result in a sentence that is grammatically correct and contextually meaningful. The meaning of the sentence may change after interchange, but it must remain logically correct. Select the option that indicates all such possible interchanges. The regulator proposed a stringent (
• D over time.