After giving birth, female bighorn sheep lick their newborn lambs. this behavior continues off and on for up to 6 hours, after which mothers no longer lick their lambs. licking stimulates the lamb to nurse and removes moistures to prevent hypothermia. how did the lamb-licking behavior evolve?
a. by sheep being consciously aware of the benefits such behavior has for her offspring.
b. increased survival of lambs whose mother had the genes for lamb-liking behavior
c. lamb-licking offers no benefits and causes no harm, so it has not been selected against.
d. all of these