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: economic vulnerability communicative vulnerability social vulnerability institutional vulnerability

Economic vulnerability

Explanation:

Economic vulnerability is the concept that characterizes the condition of groups of individuals that are on the fringes of society, that is, people or families that are in the process of economic exclusion, mainly due to socioeconomic factors. This profitability is characterized by the impossibility of individuals to possess what they need because their economic conditions do not allow, even if the price of the product that the individual needs is reduced.

Based on this, we can conclude that a subject who participates in a drug study because treatment is available at low or no cost, and he could not afford it, is an example of economic vulnerability.

the answer to this question is d