Answer:
people 18 and over
Explanation:
The Constitution has the right to chage the age for voting so they change it from 21 to 18
The fault block mountains shift
Letter A is the correct answer.
Economic vulnerability refers to the inability of people to get what they need due to their financial conditions. This situation is a good example of economic vulnerability because the subject only participates in the drug study because that's the only chance he/she will have to get the treatment he/she needs.
