They can be cured. They are caused by bacteria. They are spread to others. They can spread only in winter.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which of these best defines communicable diseases?
Possibilities:
- They can be cured.
- They are caused by bacteria.
- They are spread to others.
- They can spread only in winter.

They are spread to others.