Read the following body paragraph from an argumentative essay.

Restaurants should have nutritional facts listed on their menus because they could help people with food allergies. According to the CDC, less than 50% of restaurant managers, servers, and food workers received training on or were aware of allergens in foods served at their restaurants. The CDC states, "Ingredient lists and recipes are important tools in reducing the risk of food allergic reactions. Customers with food allergies rely on restaurant staff to provide them with accurate information on ingredients."

Which important element of a body paragraph is missing?

A reason to support the claim
Elaborative details
Signal verbs or phrases
Transition words or phrases