IT WOULD APPEAR THAT THE MAIN DANGER AHEAD IS THAT

40. - DE THI THU HAY CHON LOC DE THI THU TANH CO D AN
DE THI THU HAY CHON LOC DE THI THU TANH CO D AN
40. It would appear that the main danger ahead is that: A. man will detroyed everything on the Earth. B. man will be use up all the fuels. C. there will be a population explosion. D. more speciess of animal may die out.