Kari plans to sample 20 people of a population that contains 100 students. She wants to determine how many people wake up before 6 a.m. Which sample is the most random?

A random sample should give students throughout the population a chance to be selected, rather than choosing people based on when they arrive or a shared characteristic. Taking 5 students from each of the 4 homeroom classes spreads the sample across the school and is the most representative choice listed. The other choices may favor students with particular schedules or activities.

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