Answer:
hello! the correct answer should be D. Transition words or phrases.
Step-by-step explanation:
transition words help to link sentences together appropriately and smoothly- depending on what the context the word is used. a transition word may be used to add onto/carry a sentence; to contrast a point being made (maybe in the use of a counterclaim); or for emphasis. this paragraph states its claim and provides a source, but is missing a key transition. a transition could be used before introducing the claim, “restaurants should have nutritional facts listed on their menus”.