<p>The correct answer is (A) subsequent.</p>
<p>In the given sentence, the word "subsequent" is the most appropriate choice to complete the sentence and convey the intended meaning.</p>
<p>The word "subsequent" means happening or coming after something else. In this context, it implies that the sales are expected to increase gradually in the months following the Christmas breaks.</p>
<p><span style="font-size: 13.008px;">(B)</span><span style="font-size: 13.008px;"> </span> "additional" means extra or added. While it could be used to indicate an increase in sales, it does not convey the sense of happening after a particular event or time period, as required in the sentence.</p>
<p><span style="font-size: 13.008px;">(C)</span><span style="font-size: 13.008px;"> </span> "annual" means occurring once every year. Although it is related to time, it does not fit the context of the sentence because it does not indicate an increase in sales after the Christmas breaks.</p>
<p><span style="font-size: 13.008px;">(D)</span> "limited" means restricted or confined. It does not fit the context of the sentence because it suggests that the sales are expected to remain restricted rather than increase gradually.</p>