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

A person as a source of intellectual light or moral inspiration

Luminary

The option that can be used as a one-word substitute for the given group of words "a person as a source of intellectual light or moral inspiration" is luminary.

• Lurch means to move or stagger unsteadily.
• Luminary means a person who is famous or respected in a particular field.
• Luminaire means a light fixture.
• Lunette means a semicircular window or opening.

The word luminary is the most appropriate because it specifically refers to a person who is a source of intellectual light or moral inspiration. The other words do not have the same connotation of enlightenment or guidance.