Exam SnowPro Advanced Data Engineer topic 1 question 20 discussion

as wrote here: https://docs.snowflake.com/en/user-guide/json-basics-tutorial-flatten You can flatten the event objects in the events array into separate rows using the FLATTEN function. The function output includes a VALUE column that stores these individual events. You can then use the LATERAL modifier to join the FLATTEN function output with any information outside of the object

D. When TABLE with FLATTEN is acting like a sub-query executed for each returned row. The TABLE with FLATTEN combination is typically used when you want to treat the result of the FLATTEN function as a table that can be further joined or manipulated. This is particularly useful when you need to perform additional operations on each row returned by the FLATTEN function. The LATERAL FLATTEN combination is used when the FLATTEN function references other tables or sources in the FROM clause, and it allows for correlated subqueries.

By my opinion, as is wrote here: https://docs.snowflake.com/en/sql-reference/functions/flatten the answer should be: Flattens (explodes) compound values into multiple rows.

https://docs.snowflake.com/en/sql-reference/functions/flatten