Which program is used as a utility for MyISAM table maintenance?

Answer: Option C

This question is asking about a tool used to keep MyISAM tables in good shape. Think of it like a tool to fix a broken toy!

MyISAM is an older type of table storage in MySQL. It's like a specific way to organize data.

Out of the options, myisamchk is the tool designed for fixing and checking MyISAM tables.

So the answer is Option C: myisamchk.