Which statement about the holocaust is true?

a)
children were not allowed in the concentration camps.
eliminate

b)
the nazis avoided killing women and the elderly.

c)
jews were the main targets of the nazis.

d)
most germans tried to the victims.

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