Answer: Option 'b' is correct.
Explanation:
Since we have given that
Amount of salary he earned last year = $80,000
As he is a financial advisor and he gets a salary.
So, it becomes "Earned income".
Now, he sold stocks for $5000,
So, he is selling his assets to gain an amount of $5000.
so, it becomes "Capital gains".
As I and III are correct
He has earned income i.e. I and has capital gains i.e. III
Hence, Option 'b' is correct, As I and III are correct .