how would reducing low-growing plants from an area impact a population of tortoises with two varieties of neck extension ability: short and long distance?

Question

a. the proportion of tortoises with the ability to extend their necks a long distance would increase
b. the variety of tortoises that could only extend their necks a short distance would go extinct
c. the variety of tortoises with the ability to extend thier necks a long distance would go extinct
d. the proportion of tortoises that could only extend their necks a short distane would increase

Answer 1

a. the proportion of tortoises with the ability to extend their necks a long distance would increase