Final answer:
VLOOKUP is used when the leftmost column of the lookup table contains the data you are looking up.
Step-by-step explanation:
True - VLOOKUP is used when the lookup table contains the data you are looking up. In Excel, VLOOKUP is a function that allows you to search for a value in the leftmost column of a table and return a corresponding value from a specified column. It looks for a match based on the value you provide and returns the value from the same row in the specified column.