the correct answer is d. overall of standard living !
from the statements given the ones that are consistent with this result are:
1-teenagers do not have as much income as adults, so they are more price sensitive.
the study talks about increasing the price to reduce consumption and clarifies that adolescents are more likely to adapt to changes in price. which is different from that established in the declaration. but the other two options on adults are even less consistent with the statement about the study.
the answer to the blank space given in the question is post-conventional.
kohlberg’s theory of moral development divides how human morality develops into six stages, that are divided into three levels of morality: pre-conventional, conventional, and post-conventional.
an individual who reaches the final level, which is post-conventional, would realize that individuals are separate from society, and each person has different principles – which may come into conflict with the society at large. she or he will not believe in absolute rules, and tend to be relativistic.