How far do US workers travel to get to their jobs? A researcher would like to collect information on the commute distance traveled by workers and considers many methods for collecting data. Which of the following methods represents a voluntary response sample?

A voluntary response sample is made up of people who choose for themselves whether to participate. In choice A, workers decide whether to share their commute distance on the website. The other choices involve workers or adults being asked directly, rather than responding to an open invitation.

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