The standard of living is measured through:

a
Racism levels and low SES
b
Student loans and low crime rates
c
Gross national income per capita at purchasing power parity
d
HDMI vs. LDC

Consider the events in alfred wegener's life that led to his development of the continental drift hypothesis. review the items below and determine whether each item is (1) an observation that led alfred wegener to develop his continental drift hypothesis, or (2) evidence wegener gathered to support his proposal.