Answer:
B. An increase in the physical capital stock of the country
Explanation:
Gross domestic product is the sum of all final goods and services produced in an economy within a given period which is usually a year.
GDP calculated using the expenditure approach = Consumption spending + Investment spending + Government Spending + Net Export
If physical capital stock is increasing, it means investment spending is increasing and gdp would rise.
Increase in tax rate reduces disposable income which leads to a fall in consumption and gdp.
An increase in interest rate leads to a fall in investment and gdp.
If unemployment is high, gdp would be low.
I hope my answer helps you
