The two parameters COSTS and SETTINGS from the SQL EXPLAIN and post Use the parameter of the given choice on a SQL query and write about your observations:

• One paragraph explaining the parameter COSTS and SETTING and what it does.
• Write what SQL query with your EXPLAIN command and the parameter of your choice
• Describe what you were expecting to see and what you learned after running the EXPLAIN command using that parameter. And describe your observation on the output of the ran query.

LINK to refer:
https://www.postgresql.org/docs/14/sql-explain.html