In which file are the statements entered in 'mysql' saved?

Answer: Option C

This question asks where MySQL saves the commands you type in the 'mysql' command-line tool.

Think of it like a notepad for your SQL commands. When you type something and press enter, MySQL remembers it.

Out of the options, .mysql_history is the file where MySQL keeps a record of your recent commands.

So the correct answer is Option C: .mysql_history.