Here's a problem to solve: Many endangered animals are captured, tagged, and then released back into their environment. The tag may be a piece of coded plastic or metal that is placed somewhere safe on the body. Which is the most likely reason to tag an animal?

Among the 4 following options, which is the correct answer?

- A: to monitor their eating habits
 
- B: to monitor their roaming habits
 
- C: to monitor their sleeping habits
 
- D: to monitor their reproductive habits
 