imagina que eres un juez y que a tu oficina llega la accion de tutela que redacto tu grupo en la actividad de la pagina 236. Describe las acciones concretas para detener la violacion del derecho y garantizar su proteccion

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