Answer:
nucleus-the central and most important part of a cell forming the basis for its activity and growth.
organelle- miniscule organs and specialized structures within a living cell, required for cell life and functions
DNA- AKA Deoxyribonucleic acid is a self-replicating material which is present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.
Explanation:
D) selecting random sample allows for a more representative sample in a survey.
