Select the option that can be used as a one-word substitute for the given group of words.

A disturbed state of mind caused by an illness.

Delirium

The option that can be used as a one-word substitute for the given group of words is delirium.

• Delirium is a disturbed state of mind characterized by restlessness, illusions, and incoherence, occurring in intoxication, fever, and other disorders.
• Discrepancy is a difference between two or more things that should be the same.
• Dilemma is a situation in which a difficult choice has to be made between two or more options, none of which is satisfactory.
• Depreciation is a decrease in the value of something over time.