Which of these is an example of a random sample?
a. mrs. baker selects the 10 students whose names are drawn from a bag to fill out a survey.
b. mrs. baker selects the 10 students who arrived to class first on monday to fill out a survey
c. mrs. baker selects the 10 students with the highest grade point averages to fill out a survey.
d. mrs. baker selects the 10 students who raised their hands to volunteer to fill out a survey.
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