An "appositive" can be defined as a noun or a whole noun phrase used to rename or clarify (by giving an explanation) found next to another noun, usually separated by a coma, dash or a bracket. One of the correct answers to the question would be option B, since the noun would be Garage and the appositive would be "the most cluttered room in the house" and it is added correctly because it is separated from the noun by a comma. The other would be option D since the appositive would be "Adam" and the noun phrase would be "Joey's brother", it is correctly added because Adam renames the noun phrase "Joey's brother" and it is next to it separated by a comma.
Option A is not correct because the word spider should have been next to huge insect and option C does not contain an appositive.
