What risk do pests pose to consumers?
a. pests can eat the food stored in your establishment
b. pests can spread germs and contaminate food
c. pests can be harmed if they come into contact with certain foods
d. pests require the use of pesticides, which are very harmful substances?

All of the above-mentioned facts are the risks that pests pose to the consumers. Pests are unwanted insects, which may infect food, as they are laden with pathogenic micro-organisms, they eat away the stored food, as a source of nourishment, and are difficult to manage. Pesticides are used to kill the, and they are chemicals, which may also pose serious threats, if consumed in large quantities.  

The answer is energy. the arrows are showing how exited and energized the stones are.