Find out that word, which spelling is WRONG

The correct answer is C. Depresion. The correct spelling is depression.

A boundary is a line that separates two areas. An exhibit is a thing that is shown to the public, especially in a museum or art gallery. A demonstration is a public show of support for or opposition to something.

Depression is a mental illness that causes a persistent feeling of sadness and loss of interest in activities that once were enjoyable. It can lead to a variety of emotional and physical problems and can decrease a person’s ability to function at work and at home.