In the following sentence, four words marked as (A), (B), (C), and (D) may be misplaced. Identify the pair of words that must be interchanged to render the sentence grammatically correct and contextually meaningful.

Encouraging active listening assists managers in (A) building workplace (B) disputes and resolving team (C) harmony during critical (D) operations.

The correct option is B-C.

To determine the correct interchange of words, let us analyze the context of the sentence:

Original Sentence:
"Encouraging active listening assists managers in (A) building workplace (B) disputes and resolving team (C) harmony during critical (D) operations."

Contextual & Logical Analysis:
1. Active listening is a positive management practice. Therefore, it helps in building positive workplace elements like harmony, not "disputes".
2. Similarly, conflict resolution skills are aimed at resolving negative issues such as disputes, rather than "harmony".

After Interchanging (B) disputes and (C) harmony:
"Encouraging active listening assists managers in (A) building workplace (C) harmony and resolving team (B) disputes during critical (D) operations."

This makes the sentence both contextually meaningful and grammatically correct. Hence, the correct pair to interchange is B-C.