It is clear from the passage that one of the major concerns of the police is ____

The police are a regular force established for the
preservation of law and order and the prevention and
detection of crime. The powers they have vary from
country to country and with the type of government; the
more civilised and democratic the state is, the less police
intervention there is. England, compared with other
countries, was slow to develop a police force, and it was
not until 1829 that Sir Robert Peel's Metropolitan Police
Act established a regular force for the metropolis. Later
legislation established county and borough forces
maintained by local police authorities throughout England
and Wales.