By keeping them in a healthy mental setting but not being over protective give corporal punishment as necessary
Cogeneration is the process of taking a waste product or process and producing heat and generating electricity from it at the same time.
It could be collection of waste heat from the original generation of electricity or burning of biodiesel, ethanol or methane gas from sewer or cow dung. The only answer where electricity is using or creating heat and generating electricity power is C.
Dignity can play a role it should not. The dignity comes into effect if and when a party concerned is unable to participate fully in an activity of society in the event of insufficient funds for any item/purchase/luxury suggestively needed for this activity.