Answer:
Through application
Step-by-step explanation:
Operating system is the part of the computer which is known to come with the computer from the manufacturer. This aspect comprises the software that can be used to executive activities or work that are supposed to be done on the computer. Examples are the Microsoft office, internet explorer e.tc.
Applications are the software applications that initially come with the computer or installed by the user to execute work.
In this case, applications are the one to be used.