Answer: Schema

Masking policies in Snowflake are created at the schema level, as explicitly stated in Snowflake's official documentation. The community discussion shows that option C (Schema) has the highest percentage (60%) and is supported by references to official documentation links. While masking policies are applied to columns (option B), they are created as schema-level objects. The documentation clearly states: 'Snowflake supports masking policies as a schema-level object to protect sensitive data.' Options A (Table) and D (Database) are incorrect as masking policies are not created at those levels.

Author: LeetQuiz Editorial Team