Answer:
The correct answer to this estimation is:
Option: D and B
Step-by-step explanation:
The better estimation is given if we are given a information on a random sample also as large the random sample is ; the better is the estimation.
Hence from the given estimation of 500 random sample we can obtain result for population of 35000 families.
Similarly if we are given a information on 1000 families it will give a more better estimation.