If you notice files being transferred to or from your computer
a.) simply close the window
b.) open a new internet window
c.) tell the instructor
d.) close the internet session and tell the lab instructor

d. close the internet session and tell the lab instructor

If you notice files being transferred to or from your computer is a malware attack in which a virus or worm is transferred to the host system in order to make copies of all the files present in the host system and these are transferred to the attacker through internet. To stop the action of malware the internet session should be closed in order to prevent the loss and transfer of file.