A major function of public corporation is to

A major function of a public corporation is to provide certain essential services for all. Public corporations are established by the government to provide necessary goods or services to the public, which may not be possible for private companies to provide. These services may include healthcare, education, transportation, utilities, and other services that are deemed essential for the well-being of society. Public corporations are also responsible for collecting revenue for the government, but their primary function is to serve the public by providing necessary goods and services.