Inflation makes it harder to buy things because
a. it increases your tax burden to the government
b. it causes your money to have less value
c. it decreases the cost of goods and services
d. it leads to a excess of goods and services

Inflation is the situation wen a certain amount of money has less purchasing power - is worth less than before. This means that b. It causes your money to have less value - this is the correct answer.

You still have the same amount of money in the wallet, but you can buy less goods with it.