10. 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?

A The variety of tortoises with the ability to extend their necks a long distance would go extinct.
B The proportion of tortoises with the ability to extend their necks a long distance would increase.
C The variety of tortoises that could only extend their necks a short distance would go extinct.
D The proportion of tortoises that could only extend their necks a short distance would increase.

There is no clear answer to this question as it would depend on various factors such as the specific species of tortoise, their dependence on the low-growing plants, and the availability of alternative food sources. It is possible that both varieties of tortoises could be impacted, but without further information, it is difficult to determine the exact outcome.