A Scientist Observes That When She Opens the Back Door

question 11

Multiple Choice

A scientist observes that when she opens the back door of her house to let her cat out, the songs of a certain species of bird abruptly change.She wants to follow up on her observations with an informal experiment.Which of the following is the best hypothesis for explaining the birds' song changes?

• A)The bird species switches from song to warning call whenever it sees a potential predator.
• B)The bird species has a variety of songs that it sings, regardless of what is happening in its environment.
• C)The scientist is mistaken and the songs do not change.