Final answer:
County police agencies generally require the least amount of pre-service training.
Step-by-step explanation:
Of the City, County, Federal, and State Law Enforcement Agencies, on average, county police agencies require the least amount of pre-service training. County police agencies typically focus on law enforcement at the county level and have a narrower jurisdiction compared to city, state, or federal agencies. While specific training requirements vary by jurisdiction, county police agencies generally have shorter pre-service training programs.
Learn more about Pre-service training requirements for law enforcement agencies