The purchasing power of people with decreases a lot when inflation occurs.
rising incomes
fixed incomes

The purchasing power of people with fixed incomes decreases a lot when inflation occurs.  

Explanation:

The people who, every month, obtain a fixed income as compensation for their work, are the most affected in cases of inflation. This is because inflation generates higher prices and lower purchasing power of money, so more and more money is necessary to buy the same good. Therefore, this results in a direct loss for those who have a fixed income, since inflation occurs before employers raise their wages, thus losing purchasing power.

the answer is

a) revise existing treaties

b) do away with political alliances

c) prevent the spread of communism

d) bring an end to european colonization

the main goal of the southeast asia treaty organization was to prevent the spread of communism in southeast asia.

elastic potential energy