the answer is D, because the balance and Screen focus is what he needs to do to apply and maintain consistency in the content and images.
Hope this helped
:)
hey if this online school has the system to teach you online then yes they can track your location too. that's all depend upon how this online platform is build. read their privacy policy to check if they have mentioned about it there. some website don't track locations. but in last it all depends how the system has been designed.
