To find the maximum amount Harrison can earn per week, we can multiply his hourly wage by the maximum number of hours he is allowed to work per week.
Harrison's hourly wage: $14.50
Maximum hours per week: 20
Now, calculate his weekly earnings:
\[ \text{Weekly Earnings} = \text{Hourly Wage} \times \text{Maximum Hours} \] \[ \text{Weekly Earnings} = 14.50 \times 20 = 290.00 \]
Therefore, the most Harrison can earn per week is $290.00.
So the correct answer is: $290.00.