A property on Main Street that was formerly a retail store will become the site of a new city hall made possible by the government's power of:

The correct answer is eminent domain, which refers to the government's authority to take private property for public use, provided that the owner is compensated fairly. In this scenario, the transformation of a property from a retail store to a new city hall indicates that the government is utilizing its power to acquire the land to serve a public purpose, which is characteristic of eminent domain.

This concept is essential in urban planning and development, as it allows municipalities to repurpose land for the benefit of the community, such as building infrastructure, schools, or government buildings. Such actions typically follow legal procedures, including appraisals and potential negotiations with property owners.

Escheat, possibility of reverter, and taxation do not apply in this context. Escheat deals with property reverting to the state when an owner dies without heirs, the possibility of reverter refers to a future interest in property reverting back to the original grantor under specific conditions, and taxation involves collecting funds from property owners but does not involve the government outright taking property for public use.