Answer: Alerts

The question asks about schema-level objects that allow periodic actions based on specific conditions using Snowflake data. Alerts are specifically designed for this purpose - they monitor query results and trigger actions when conditions are met, supporting scheduling and conditional execution. External tables are for querying external data sources, not for executing actions. Secure views provide data security but don't execute actions. Materialized views improve query performance through pre-computation but don't execute external actions based on conditions. The community discussion shows 100% consensus on answer A (Alerts) with references to official Snowflake documentation confirming alerts are designed for conditional action execution.

Author: LeetQuiz Editorial Team