Answer:
B. Carbohydrates' bad reputation ignores the benefits they can offer.
Step-by-step explanation:
The writer mentions the position many people nowadays have concerning the ingestion of carbohydrates, which is leading them to avoid the altogether, but the main idea if the text is that "not every "carb" should be rejected", which shows that a mistaken idea formed around this substance is impeding people to get the benefit from it.