How did sameul adams work for liberty for the colonies a. he spied on the british troops b. he ran for goverment office c he defended colonists in court d. he wrote and spoke out his ideas. asap plz whoever is first ill give them and brainlisest awnser.

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