what are some signs that maintaining such a high standard of living may have a negative impact on quality of life

Standard of life and quality of life both are important aspects of life. Both are important but there are some differences that create negative impact on the quality of life of a person.

Explanation:

Standard of life is refer to the the wealth, style, goo materials and the necessities of an individual that are presented according to the socio-economic-standard. On the other hand if we talk about the quality of life, it is subjective. It depends on the happiness index.

These two terms always confusing and overlapping to each other. People do not understand which one is best.

When people start to measure their happiness with goods and materials then it is problematic.

When people start to discriminate between people on the basis of their standard of living create a problematic behavior.

even though you have attached neither the chart nor the generalizations, i have located them online. the right answer is d, since they are asking you about a generalization. you can only infer from the chart that between 2008 and 2009 the number of employed workers decreased significantly (from over 115 millions to 107 millions approximately), which signals some type of economic crisis.