David and his lab partner are dissecting an earthworm during biology lab. they are cutting the earthworm with a scalpel in order to examine the inside of the worm. which of the following safety procedures should they follow while using the scalpel? a. always cut away from yourself and others. b. do not wear gloves to protect your hands. c. do not clean the scalpel after the dissection is done. d. always hold the organism in your hands while cutting.