Question

Tobias has mononucleosis. Mononucleosis is a disease that tires and weakens the body. It is caused by a contagious virus that is transferred through direct contact. Which would be the best explanation of how Tobias contracted mononucleosis?
Tobias never exercised and was more susceptible to the virus.
As a male, Tobias has a better chance of getting mononucleosis.
Tobias inherited the gene from his parents.
Tobias drank from a water fountain that was contaminated.

Answer 1

Tobias drank from a water fountain that was contaminated.

Mononucleosis is caused by a contagious virus spread through direct contact with infected saliva (e.g., kissing or sharing drinks/utensils), so using a contaminated fountain could transmit it.