As to the government procuring practices:

Question $18$ options:

Law enforcement agencies do not have to follow such procedures because they are rendering public safety services and have the discretion to enter contracts at will

Often the resulting contracts have provisions that are "subject to funding" which allows the law enforcement agency to cancel if yearly appropriations of funding by its parent funding agency are not realized

Generally do not have to be open to competitive bidding processes

All of the above are true$$