The study of the environment is called ecology.
The correct answer to the question is C which is a classroom desktop.
What is bacteria?
- Bacteria are ubiquitous, mostly free-living organisms often consisting of one biological cell.
- They constitute a large domain of prokaryotic microorganisms. Typically a few micrometers in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats
According to the question, A classroom desktop is the least likely to grow bacteria because it is a relatively clean surface.
The armpit of a human and a warm freshwater mud puddle is a more suitable habitat for bacteria because they are warm, and provide a relatively safe environment for them
Hence, the correct answer is option 3.
For more information about the bacteria, refer to the link:-
https://brainly.com/question/14688752
