4. Which of the following best describes how LAMARCK would explain giraffes with long necks? A. Long-necked giraffes eat more grass that short-necked giraffes, so their necks grow longer. B. Natural variation in the population produces some longer and some shorter-necked giraffes, and necked giraffes can reach food more easily C. Some giraffes have acquired longer necks by stretching to reach food and passed the trait to the D. Giraffes just started out with long necks and haven't changed.