Directions: In the following question, a sentence is given with four words marked as (A), (B), (C), and (D). These words may or may not be placed in the correct order. Four options with different arrangements of these words have been provided. Mark the option with the correct arrangement as the answer. If no rearrangement is required, mark option (5) as your answer.

A demanding(A) boss expects their workers to efficiency(B) at top levels, though this very rarely(C) happens when the boss themselves isn’t present to ensure perform(D).