Option A is correct. This sequence first uses 'ALTER ACCOUNT SET CORTEX MODELS_ALLOWLIST to make 'mistral-7b' and broadly available by their plain names to any user with The call ensures these changes are applied. Then, it grants the specific application role 'SNOWFLAKE."CORTEX-MODEL-ROLE-CLAUDE-3-5-SONNET"' directly to , providing exclusive access to that model without adding it to the general allowlist. Option B is incorrect because adding 'claude-3-5-sonnet' to the account-level would make it generally available, violating the requirement for exclusive access. Option C is incorrect because granting individual application roles to 'PUBLIC' for 'mistral-7b' and is not the method described for making them broadly accessible via an account parameter (allowlist). While it provides access, it doesn't align with the 'broadly accessible...via a Snowflake account parameter' part of the requirement. Option D is incorrect as 'ALTER ACCOUNT UNSET removes the broad access for 'mistral-7b' and Additionally, direct 'GRANT USAGE ON MODELS is not the primary mechanism for controlling access to base Cortex models; rather, application roles are used. Option E is incorrect because the 'ALTER ACCOUNT command for 'CORTEX MODELS_ALLOWLIST can only be executed by the 'ACCOUNTADMIN' role, not 'SECURITYADMIN'.