Question 10 - High School Biology Practice Test for the STAAR test

Which statement is best supported by the observations in the attached passage?

In the 1970’s, biologists Peter and Rosemary Grant studied a population of finches on the island of Daphne Major. They measured the beak sizes of the birds and the availability of seeds for their food. During drought conditions, they observed that smaller seeds became scarce and the average beak size of the finch population increased in the next generation of birds.

Background information retrieved from: https://www.pbs.org/wgbh/evolution/educators/course/session4/elaborate_b_pop1.html

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