how has the standard of living in the united states generally changed over the past 100 years?

a. it has stayed more or less the same
b. it has gotten much better
c. it has gotten a little better
d. it has gotten much worse

b. it has gotten much better

Advancements in technology, improvements in infrastructure, increased access to education, and higher standards of living have led to an overall improvement in the standard of living in the United States over the past 100 years. Life expectancy, income levels, access to healthcare, and quality of life indicators have all shown improvement during this time period.