Which function returns a specified number of characters from a defined position in a string?

The function that returns a specified number of characters from a defined position in a string is MID. This function is widely used for string manipulation, allowing users to extract a substring from a larger string based on a starting point and length.

For instance, if you have a string like "Kinaxis" and you want to extract the characters starting from the second position, you can use MID to specify the start position and the number of characters to return. The function will then return the substring that corresponds to your parameters, enabling efficient and precise string handling within various applications.

In contrast, the other options serve different purposes. RIGHT is used to extract characters from the end of a string, TRIM removes leading and trailing spaces from a string, and REPLACE is meant to substitute part of a string with another string. Thus, MID is the only function that specifically meets the requirement of extracting a certain number of characters from a specific position.