In the book uncovering a mystery The author makes the point that “detective work is involved in cave science.” Write an essay analyzing how this point is supported throughout the passage. Use evidence from the passage to support your response.

Donald is studying the eating habits of all students attending his school. he samples the population by dividing the students into groups by grade level and randomly selecting a proportionate number of students from each group. he then collects data from the sample. which type of sampling is used? select the correct answer below: systematic sampling convenience sampling stratified sampling cluster sampling