40It is not the strongest of the species that survives, nor the most intelligent, but the one most responsive to change.
(A)Thespecies that respond are not only the most intelligent but also the strongest.
(B)Thespecies that survive are not the strongest, nor the cleverest, but the most adaptable.
(C)Thestrongest are the species that are the most intelligent and most responsive to survival.
(D)Themost intelligent are the species that are the most responsive to strong change and survive.