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

A secret or disguised way of writing

Cypher

The option that can be used as a one-word substitute for a secret or disguised way of writing is cypher.

• Emblem is a symbol or device that represents something.
• Symbol is a thing that represents or stands for something else, especially something abstract.
• Puzzle is a problem to be solved, typically by thinking logically.