Ariel wants to find out the most popular theme for spirit week at school. She cannot decide between two methods. Option 1: She will poll each student who leaves the gym after sports practice. Option 2: She will randomly poll three students from each first-period class. Which statement about the methods is true?

Option 1 surveys only students leaving the gym after sports practice, who may have different theme preferences from other students. That makes the sample biased. Option 2 randomly selects students from each first-period class, giving students across the school a chance to be included, so the true statement is that Option 1 is biased.

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