Use evidence from the fact that if all members of a species cannot produce offspring then that species will likely become extinct to answer the following question. Choose from options. "If a species of plant or animal ceases to exist on earth, either by natural causes or by activities of humans, the loss of the plant or animal"

Options are:
(1). reversible extinction;
(2). cannot be undone;
(3). reversible;
(4). a subspecies;
(2).