2/a=(2.5/1.25), 2=2/a, a=1
40---------
40-------
40---------
40-------
40--------
Answer:
B. Biased Sample.
Step-by-step explanation:
The population is not only made of mothers, but there are fathers, sons, daughters, brothers and sisters, and a lot of other people. By selecting only mothers, it gears the survey to be biased towards a certain type of thinking.
~