I think the correct answer would be distinguishing right from wrong and performing the right action. Ethical would always be related to moral principles, knowing what is the best and right thing to do and what are bad.
Being truthful. Distinguishing right from wrong and performing the right action. Following the norms dictated by society. Following the rules set by an authority figure.
The student could tact all items in his backpack and through the sensation reach the cell phone. So he should touch and feel what could be the cell phone.
