To calculate the sales tax, you multiply the price of the shoes by the sales tax rate.
- The price of the shoes is $60.
- The sales tax rate is 5%, which can be expressed as 0.05.
Now, calculate the sales tax:
\[ \text{Sales Tax} = \text{Price} \times \text{Sales Tax Rate} = 60 \times 0.05 = 3 \]
The store must pay the calculated sales tax amount of $3 to the state government as a result of this sale.
So the correct answer is b. $3.