To answer this question, we need to consider the comparative form of the adjective "merry" to complete the sentence correctly.
Option A) "the merriest" - This option is incorrect because it uses the superlative form of the adjective "merry," which is not suitable for the sentence. The superlative form is used to compare three or more items, but the sentence is comparing two items (being home for the holidays and something else).
Option B) "a merrier" - This option is correct. It uses the comparative form of the adjective "merry," which is appropriate for comparing two items. The sentence is stating that being home for the holidays is better or more enjoyable than something else.
Option C) "a merryer" - This option is incorrect because it misspells the comparative form of the adjective "merry." The correct spelling is "merrier," not "merryer."
Option D) "the marryer" - This option is incorrect because it uses the incorrect adjective "marryer," which does not convey the intended meaning of the sentence.
Therefore, the correct answer is option B) "a merrier." This option correctly uses the comparative form of the adjective "merry" to complete the sentence.