Which of the following are types of joins in SQL?Answer choicesSelect an optionCross joinNatural joinLeft joinAll of the above

The correct answer to the question is "All of the above."

Explanation:

1. Cross Join: A type of join that returns the Cartesian product of two tables, meaning every row from the first table is combined with every row from the second table.
2. Natural Join: A type of join that automatically joins tables based on the columns with the same name in both tables.
3. Left Join (or Left Outer Join): A type of join that returns all records from the left table and the matched records from the right table. If there is no match, the result is NULL on the side of the right table.

Since all these join types are valid SQL join types, the answer is "All of the above."