The correct answer is D. Chocolate covered
Step-by-step explanation:
In the English language, the hyphen is more commonly used to join words or parts of them this includes joining two words that act as a compound modifier (words that describe or modify others) in case the modifier is placed before the noun it describes or in certain compound nouns, for example, the word brother-in-law. Additionally, a hyphen is not required if the compound modifier goes after the word it modifies or when the compound modifier includes and adverbs such as especially, heavily, slowly, etc. Considering this, the two words that should be hyphenated are "Chocolate covered" because these two words act as a compound adjective or modifier and are placed before the word they describe which is desserts, therefore according to grammar a hyphen should be used.