Answer: Users, Accounts

According to Snowflake documentation and the community discussion consensus (with multiple comments referencing the official documentation and receiving upvotes), network policies can be applied to Accounts and Users. The official Snowflake documentation link provided in the discussion (https://docs.snowflake.com/en/user-guide/network-policies.html#label-verify-network-policy-activation) confirms that network policies are applicable at the account level and user level. Roles, databases, and warehouses cannot have network policies directly applied to them, making options A, B, and C incorrect.

Author: LeetQuiz Editorial Team