It's called a destructor function. It cleans up file handles, dynamic memory and any resources that the object held. It's name is the class' name preceded by a tilde (uppercase back tick, next to the "1" key).
I think all the answers you picked were correct except the last one I think is B because even though the disc is copyrighted it's not considered intellectual property
Answer:
Mobile are build in a specific platform such as Android, iOS ect and they use application such as apple store and have access to the system such as GPS and the camera. Mobile apps live and run on mobiles as on they are their own thing controlled by a developer on the other end
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