Answer:
Social structure
Explanation:
The social structure is made up of all those institutions and practices that form a society and organize social life while establishing limits on individual's behavior:
<em>This creates a set of arrangments and patterns of behavior, that shape each individual somehow to make him fit in the social system. </em>
Some of these social structural components can be: Institutions like Economy, Politics, and practices like roles, norms, values.
They make possible, to live together.
<span>The largest
experimental statistical study that has happened in the past and was conducted
for is the Public Health Service Experiment that has happened in the year 1954,
this experiment has been conducted because of the Salk Vaccine, which is also
known as the Polio Vaccine.</span>
Hey there!
Your correct answer would be
. . . .

Justification
The reason why D.) would be your correct answer would be because, imagine a mother giving rules to her son. If the father were to say something that would violate the wife's decision then this would be highly rude of him
It's same in this case,<span>Local governments have the right, they to do it, they just can not violate them.
Hope this helps.
~Jurgen</span>
Answer:
less people are getting vaccinated