Here's a problem to solve: A certain species of endangered parrots lives on an island that can be seriously affected by large floods. Which of these is considered a negative impact to the parrot population from flooding?

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

- A: a decrease in the availability of food
 
- B: a decrease in populations of predators
 
- C: an increase in suitable nesting locations
 
- D: an increase in places to hide from danger
 