as a behavioral adaptation as a survival disadvantage as a response to a stimulus as an acquired characteristic
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: The bacterium Brucella abortus causes fever in humans. Biologists studying this bacterium found that when exposed to light, the bacterium becomes more virulent. How can this change in virulence most likely be described?
Possibilities:
- as a behavioral adaptation
- as a survival disadvantage
- as a response to a stimulus
- as an acquired characteristic

as a response to a stimulus