After laws were passed , which was a positive result of urbanization that raid the standard of living ?
a - police and fire protection
b - building safety codes
c - better working conditions
d - mandatory schooling

a drastic rise in oil prices ended decades of postwar.

i think it's b

i think i will need more detail to answer if this is a specific question on a test, but technology advancements are good for many industries, such as medicine or food industries, new technology could us in medicine in ways such as new scanners to tell us more about our bodies or new cures or vaccines for diseases.