Answer: (A) Automate fields.
Step-by-step explanation:
The macro is the function which can be use to automated the input sequence and perform mouse action. The main purpose of the macro in the word is to automate the fields by using the mouse.
A macro can used to replace the various mouse action and repeat action of the keyboard in various application like MS word , MS excel and spreadsheet.
It is the series of command and instruction that is basically used to perform various tasks automatically.