Final answer:
Aggregate functions are used in databases to perform calculations on sets of data.
Step-by-step explanation:
Aggregate functions are used in databases to perform calculations on sets of data. They are commonly used with the SELECT statement in SQL to summarize data in tables.
The given options are A. AVG(), B. SUM(), C. DIVIDE(), and D. MAX().
The correct answer is C. DIVIDE(). DIVIDE() is not a valid aggregate function. The correct aggregate functions are AVG() to calculate the average of a set of values, SUM() to calculate the total sum of a set of values, and MAX() to find the maximum value in a set.