Final answer:
Police cannot exceed their authority and must use discretion legally; excessive policies like Zero Tolerance Policing limit officer discretion in enforcing laws. option (a)
Step-by-step explanation:
Police officers have discretion in enforcing laws and they cannot exceed their authority. For example, while they can issue warnings for minor infractions and enforce traffic laws, they cannot force citizens to comply with personal demands unrelated to their duties, such as mowing the officer's lawn.
Moreover, Zero Tolerance Policing policies limit this discretion by mandating arrests for petty crimes in an effort to deter more serious crimes.