Here's a problem to solve: Students watched a bird fly to and from a large bush every few minutes. The students told their teacher, "The bird has a nest in that bush." This statement is an example of

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

- A: an inference made from observations.
 
- B: an observation made from predictions.
 
- C: a prediction made from data samples.
 
- D: a result made from inference.
 