Which option will be used with touch command to change the access time?

Solution (By Examveda Team)

In Unix, the touch command is used to change file timestamps, including access (atime) and modification (mtime) times. The -a option, when used with touch, updates only the access time of the file to the current time without modifying the file's content.
So, -a is the option used with the touch command to change the access time of a file.