Answer:
Microeconomic issues
a)How will an increase in the price of Coca-Cola affect the quantity of Pepsi-Cola sold?
c)How does a quota on textile imports affect the textile industry?
Macroeconomic issues
(b) What will cause the nation's inflation rate to fall?
(d) Does a large federal budget deficit reduce the rate of unemployment in the economy?
Explanation:
The issues pertaining to a industry and business are all studied and analyzed in Microeconomics that's why (a) & (c) fall under Microeconomic issues.
The issues pertaining to the entire economic system like inflation, budget deficit and unemployment rate etc. as stated in options (b) & (d) respectively all fall under Macroeconomic issues.