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A list of built-in functions for DataFrame is stored in ____

42. A list of built-in functions for DataFrame is stored in ____.

1. pyspark.sql.functions
2. pyspark.sql.types
3. pyspark.sql.Window
4. All of the above

Answer: A) pyspark.sql.functions

Explanation:

A list of built-in functions for DataFrame is stored in pyspark.sql.functions.