Answer:d) mysqldump
Explanation: The backing up of the database is the function that is operated by the MYSQL. The database that is to be backed up is known as the dump data ,which contains the data files in the text format."mysqldump" command is the SQL command that is given for the extraction of the single database as well as multiple databases.
This command works by recreating the data files by copying it in a quick manner.Other options are incorrect because those commands don not work in MYSQL for creating a backup of database.Thus, the correct option is option(d).
