The SQL command GET_DDL can be used to retrieve the CREATE definition of a masking policy in Snowflake. This command generates the DDL statement required to recreate the masking policy

The ACCOUNTADMIN role is required for a user to create and manage accounts in Snowflake. This role has the highest level of privileges and is responsible for managing all aspects of the Snowflake account, including the ability to create and manage other user accounts1.
https://docs.snowflake.com/en/user-guide/security-access-control-considerations.html

* In Snowflake, role grants are used to build role hierarchies.
* GRANT ROLE r1 TO USER u1: Assigns a role (r1) to a specific user (u1).
* GRANT ROLE r1 TO DATABASE ROLE dr1: Assigns a role (r1) to a database role (dr1) to manage privileges at the database level.
Why Other Options Are Incorrect:
* A. GRANT USER u1 TO ROLE r1: Snowflake does not support granting users to roles.
* C. GRANT USER u1 TO USER u2: This is invalid syntax; user grants are not allowed.
* E. GRANT DATABASE ROLE dr1 TO ROLE r1: Database roles cannot be granted to non-database roles.
References:
* Role Hierarchies in Snowflake