One great defect of our civilization is that it does not know what to do with its knowledge. Science as we have seen has given us powers fit for gods, yet we use them like small children. For example we do not know how to manage our machines. Machines were made to be man's servants, yet he was grown so dependent on them that they are in a fair way to become his masters. Already most men spend most of their time in looking after and waiting upon machines. Besides, machines are very stern masters. They must be fed with coal and given petrol to drink and oil to wash with and must be kept at a right temperature. If they do not get their meals when they expect them they refuse to work or burst with rage.
What should they want for eating and drinking?

Options

A. A. They must be fed with coal and given petrol to drink
B. B. Machines neither eat nor drink
C. C. They must be fed with food and water to drink
D. D. They want proper temperature to eat and drink

Answer

A