A Teacher Is Supposed to Be Randomly Assigning Students to Experimental

A teacher is supposed to be randomly assigning students to experimental and control groups, for participation in a learning project mandated by the school district. The teacher has an alphabetized master list of the students, numbered 1 through 30. Which is the most logical way to randomly assign the students to group?

A) Put numbers 1 to 30 in a hat, draw them out one by one, and put them into alternating groups.
B) Place the first 15 subjects from the alphabetized list in one group and the last 15 in the other group.
C) Ignore numbers, and let the students choose their groups.
D) Put numbers 1 to 30 into a hat and draw one, placing it in the experimental group. Then find a student with similar gender, attributes, and abilities, and put that one into the control group. Then go back to the hat for the next experimental subject.

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