<p>The correct answer is (B) sufficiently.</p>
<p>In this sentence, the word "sufficiently" is the best choice because it means "adequately" or "enough." The sentence is stating that each box in the shipping department must be filled with packaging material to a degree that is enough to protect the contents from damage. </p>
<p>Let's examine the other options to see why they are incorrect:</p>
<p>(A) dramatically: This word means "in a dramatic or striking manner." It does not make sense in this context because filling a box with packaging material is not typically done in a dramatic or striking manner.</p>
<p>(C) mutually: This word means "in a way that is shared or experienced by two or more parties." It does not make sense in this context because there is no indication that the filling of the boxes involves a shared experience or interaction between parties.</p>
<p>(D) suddenly: This word means "quickly and unexpectedly." It does not make sense in this context because filling a box with packaging material is not typically done quickly or unexpectedly.</p>
<p>Therefore, the correct answer is (B) sufficiently.</p>