Final answer:
Food handlers should practice all of the following: washing hands, using gloves, and keeping bread covered to prevent contamination, making 'all of the above' the correct answer.
Step-by-step explanation:
The rule that food handlers should practice for serving bread includes washing hands before handling bread, using gloves when serving bread, and keeping bread covered to prevent contamination. Thus, the correct answer is all of the above. It is essential to maintain strong food safety practices such as regular handwashing, especially before handling or serving food, to prevent the spread of foodborne diseases. Using gloves is also important as it provides an additional barrier against contaminants. Finally, keeping bread covered protects it from environmental contaminants, insects, and other potential sources of contamination. By following these practices, food handlers can ensure they are serving bread in the safest possible manner.