Is after the underlined word? If so, it'd be a preposition. It's followed by a noun.
Answer:
The correct answer is: Cooked food is at a greater risk of bacterial contamination.
Explanation:
The central idea of the "fact" response is that cooked food is at a greater risk of bacterial contamination, as, after cooking the food, the possibility of bacterial growth increases because of the temperature difference. Therefore, the cooked food should be kept at the right temperature, in order to preserve the safety of the food and prevent bacterias to thrive.
The answer is deliberated. Deliberate means to consider carefully.
