What does a double note mean when in treble clef?

The egyptians believed that doing three things would assure of the successful afterlife which one of the following is not one of those thingsa. preserving the body through mummificationb. producing portraits of the deceased to disseminate among familyc. protecting the body in a tomb in which the name of the deceased was inscribedd. providing the body with food and drink or illustrations of it in case no one was available to make the offerings