Asubject participates in a drug study because treatment is available at no or reduced cost, and he could not otherwise afford it. this is an example of: a. economic vulnerability b. communicative vulnerability c. social vulnerability d. institutional vulnerability

a. Economic vulnerability

Explanation:

Economic vulnerability is when people risk losing their jobs, assets  and money. its direct losses are  interruption of businesses ,loss of productive workforce and indirect losses include long term economic losses.

Social  vulnerability is the extent to which a social system is able to respond favourably or unfavourably to the exposure of sudden shock.It s direct losses are loss of income , employment, homelessness. It indirect losses are disease, permanent disability, loss of social cohesion due to disruption of community.

this is an outline for the decisions that frankie is going to make

opportunity cost

willingness to buy

price or quality

of course, there could be many economic strategies that should be considered important while making decision. opportunity cost is the foremost significant factor while considering any economic option. when you buy something, you should know how much you are forgoing for this product. indeed, you could buy something different with this measure if you changed your mind. willingness to buy shows how much surplus you are earning while making a decision. it is important because it shows you buy what you want or you buy because you have only limited amount of money. the price or quality can be considered as a general economic option that we are applying while buying something. when you buy something, price or quality could be one of the options. indeed, they define the characteristics of the product.    

mark brainliest!

answer:   c.

it was not against the chinese government.

explanation: