The question asks to rename a shared database role from r1 to r4. In Snowflake, database roles are scoped to a specific database, so the correct syntax is ALTER DATABASE ROLE <database>.<role> RENAME TO <database>.<new_role_name>. Option D (ALTER DATABASE ROLE d1.r1 RENAME TO d1.r4;) correctly uses the ALTER DATABASE ROLE command and maintains the same database scope (d1), which is required for renaming database roles. Option A uses ALTER ROLE instead of ALTER DATABASE ROLE, which is incorrect for database roles. Option B and Option C attempt to change the database scope (from d1 to d2), which is not allowed when renaming a database role; the database must remain the same. The community discussion confirms D as the correct answer with 100% consensus, referencing Snowflake documentation that supports the syntax used in D.