Answer:
Option (d) is correct.
Explanation:
In 2009, country X had:
Tax revenues = $550 billion
Government expenditures = $700 billion
National debt = $6.5 trillion
Deficit = Expenses - Revenues
= $700 billion - $550 billion
= $150 billion
Public Debt = National debt + Deficit
= $6.5 trillion + 0.15 trillion
= $6.65 trillion
Therefore, the country X had a Deficit of $150 billion and at the end of 2008, a public debt of $6.65 trillion.