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The object is identified as a reference to another structure in the YAML file by the special OAS key known as ____

18. The object is identified as a reference to another structure in the YAML file by the special OAS key known as ____.

1. –unique
2. $ reference
3. $ref
4. $ key

Answer: C) $ref

Explanation:

The object is identified as a reference to another structure in the YAML file by the special OAS key known as $ref.