Answer:
Recent studies prove that popcorn is one of the healthiest snack choices
Step-by-step explanation:
According to the given rough-draft paragraph, the benefits and popularity of popcorn are discussed and it is recommended that people consume the ones that were prepared with less oil
Therefore, the topic sentence that should be added to this body paragraph is option B which says that recent studies prove that popcorn is one of the healthiest snack choices.
This is because, a topic sentence summarizes the main idea of a paragraph or story.