The formula S=25000(1.032)^t describes a 3.2% growth in salary for every year where the principal value is $25000 and the time "t" is the amount of years. This is known as exponential growth.
Since t=6:
S=25000(1.032)^6
S=30200.78
Rounded to the nearest dollar is $30201. So A is the correct choice.