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

Several literary pieces of the Old English period are written by authors whose names are not known.

Anonymous

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

• Anomalies are deviations from the norm.
• Anonymous means having no name or whose name is unknown.
• Renowned means famous or well-known.
• Undercover means operating in secret.