Answer:
The sampling option Hamden city's police department needs to choose is to select a random sample of 10% of all taxpayers.
Since the Hamden city’s police department needs to choose whether to build a new addition to the police station or to buy new squad cars. And it needs money to choose any of these options. The money usually comes from the packets of taxpayers. Therefore, it would be appropriate to take a random sample of 10% of all taxpayers.