answer:The gear is called an idler and its primary function is to change the direction of rotation rather than decrease the speed or increase the torque. Calculating the gear ratio in a planetary gear reducer is less intuitive as it is dependent on the number of teeth of the sun and ring gears.
Explanation:
Well, advantages are,
it keeps your computer secure
less likely to get a virus or malware
can keep your passwords and bank details safe if entered online (if you use software like avast)
disadvantages are
they can be expensive to buy
can use a lot of room on your pc
sometimes cant fully remove a virus and just puts it into a virus locker or chest
they can sometimes be almost impossible to remove and act like a virus themselves (norton, avg etc)
your answe is A i believe
I hope that this helps
and that you have a wonderful day
Cmd.exe
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