Select the most appropriate word for the given group of words.

An institution for the care of people who are mentally ill

Asylum

The most appropriate word for an institution for the care of people who are mentally ill is asylum. The word asylum comes from the Latin word asylum, which means "refuge." Asylums were originally places where people could seek refuge from persecution or danger. In the 19th century, asylums began to be used to care for people with mental illness.

The other options are not as appropriate for describing an institution for the care of people with mental illness.

• Aviary is a place where birds are kept.
• Apiary is a place where bees are kept.
• Arsenal is a place where weapons are stored.