Final answer:
The statement is true, as chafing dishes can indeed heat food to keep it warm and are commonly used in buffet services to maintain food temperature.
Step-by-step explanation:
The statement 'Food can be heated in a chafing dish' is true. A chafing dish is a type of cooking or warming appliance that holds a pan of food over a heat source. The primary purpose of a chafing dish is to keep food warm during service rather than to cook it in a raw state. Nevertheless, the heat provided by the source, often a flame from fuel jelly, is sufficient to heat the contained liquid and, subsequently, the food above it.
In culinary settings, chafing dishes are commonly used during buffet service and catering events to maintain the temperature of prepared food. So while they can heat food to a degree, it's important to note that their capability to heat food is limited to maintaining serving temperatures rather than cooking or boiling.