Rearrange the following letters to make a single word and then choose the category in which it belongs. FARE FIG

A． Fresh fruit.
B． A gift certificate.
C． Homemade candy.

A．they are indispensable to people’s social well-being
B．they awaken people’s desire to exchange resources
C．they help people to cope with life in the information era
D．they can cure a range of illnesses such as heart disease, etc.