Final answer:
All of the above items can be contaminated with disease and potentially transmit germs.
Step-by-step explanation:
All of the above can be contaminated with disease.
Contamination of disease can occur on eating utensils if they are not properly cleaned or if they come into contact with someone who is contagious. Similarly, toothbrushes can also be contaminated if they are not properly cleaned or stored in a hygienic manner. Doorknobs can be contaminated if they are touched by someone who has germs on their hands. Therefore, all of these items can potentially be sources of disease transmission.
Learn more about Contamination of disease