Answer:
This difference exists because of the Earth's slight elipsoid shape.
Explanation:
This difference exists because of the Earth's slight elipsoid shape.
Due to this reason, the measurement of a degree of longitude is given by the following formula.
In which 
is the length in degrees at the Equator and La is the latitude(in degrees).
An economy based on trade
earthquakes are caused when rock underground suddenly breaks along a fault
Let's look at the option:
A. Only wealthy nations need to repay their debts, so it slows their
progress.
-this is not true, as not only wealthy nations need to pay back debt, but all nations
B. This is no longer a problem because debt repayment was
completely erased after World War II.
-this is not true: this is still a problem, and quite a big one.
C. Both measures rob a developing
nation of money it could use to invest in social welfare improvements.
Well, debt repayment does rob developing nation of money that it could use for other purposes: so it's true! (structural adjustment doesn't rob but it maintains the state in which the nation needs to pay back the debt)- this is the correct answer!
D. They always penalize highly developed nations rather than
underdeveloped ones.
- This is not true, as both countries are penalized, and the underdeveloped ones even more so.
