A Scientist Wants to Test the Hypothesis That a Certain

question 10

Multiple Choice

A scientist wants to test the hypothesis that a certain bird species in her back yard changes its songs to warning calls whenever it detects the presence of a potential predator.Which of the following most likely describes her initial observations?

• A)The scientist noticed that whenever she opened a door to her house, she heard birds beginning to sing.
• B)Each time the scientist let her cat outside, the birds abruptly changed their songs.
• C)The scientist noticed that the birds only appeared at certain times of the day, always singing the same song during those times.

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