The word "accepted" in the last sentence of the first paragraph roughly means ______.

A．the growth of world population
B．one type of the exponential rate
C．the population problem of more rapidly growing countries
D．the possible ways of dealing with the rapid population growth

A．imagining and handling objects
B．providing a computer with a set of instructions
C．shooting a gun and driving an automobile
D．planning and making things as an engineer does