Final answer:
When looking at target populations, the term that includes persons, groups, organizations, and populations is demographics.
Step-by-step explanation:
When looking at target populations, the correct answer includes persons, groups, organizations, and populations is demographics (a). Demography is the statistical study of human populations, focusing on various categories such as age, gender, education, religion, race, and numerous others. It is an important factor for effectively reaching and understanding an audience, in contexts ranging from public speaking to policy making. Demographics provide crucial data that reflects the composition of populations, assisting in tailoring communication and services to better fit the target audience's characteristics.