PLEASE HELP HELP I NEED THE ANSWER! 17. There are 3 populations of turtles. One population has a large shell, one population has a medium shell, and one population has small shells. To survive, turtles must have a large shell, to protect them from the turtle-eating predator. Over the next 100 years, the large shell turtles keep having babies, while the small and medium turtles slowly die. What type of Natural Selection is taking place?
a Disruptive Selection
b Directional Selection
c Stabilizing Selection
d None of the above

18. In the JuJu forest, there are plenty of tall and short trees. The tall-neck giraffe has plenty of food, and produces many tall giraffe babies. The short-neck giraffe has plenty of food and produces many short giraffe babies. The average-neck giraffe has a serious problem because he cannot eat from the tall trees, nor can he eat from the short trees. What type of Natural Selection is taking place?
a Disruptive Selection
b Directional Selection
c Stabilizing Selection
d None of the above

19. In the human population, people that are extremely skinny (anorexic) are having health problems. People that are extremely over-weight (obese) are also having health problems. People that are in the middle (average weight) seem to have the least amount of health problems. What type of Natural Selection is taking place?
a Disruptive Selection
b Directional Selection
c Stabilizing Selection
d None of the above