Here's a problem to solve: As a habitat with a small pond goes through a long drought, which of these is most likely to happen to many of the fish in the pond?

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

- A: They would adapt to the dry environment.
 
- B: They would live on other sources of water.
 
- C: They would move to another habitat.
 
- D: They would be unable to survive.
 