There are many things that teachers often do in a language classroom. Which option best describes what role the teacher is playing in the following activity?The teacher writes one of five numbers (1-5) on a number of cards (the same number as the students). Each student draws one card. Those who have drawn number 1 will form a group 1, and those who have drawn number 2 will form group 2. Thus, the students are put into five groups in a random way.