contact with environmental sources contact with an infected animal contact with a contaminated object contact with an infected person
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Ten people became sick with the flu after attending a school dance. What is the scenario that could best explain how the people got sick?
Possibilities:
- contact with environmental sources
- contact with an infected animal
- contact with a contaminated object
- contact with an infected person

contact with an infected person