Oligodendrocytes . a. regulate oxygen, carbon dioxide, nutrient and neurotransmitter levels around neurons in ganglia b. remove cell debris, wastes, and pathogens by phagocytosis c. maintain the blood-brain barrier and provide structural support d. line the ventricles of the brain and the central canal of the spinal cord e. provide structural framework and myelinate the central nervous system (CNS) axons

The answer is E

Explanation:

Oligodendrocytes provide structural framework and myelinate the central nervous system (CNS) axons.

if the hares very faster than they are now, and thus the lynx's hunting success rate drops because it will be harder to catch them, the rate that will change will be the pray-rate. the pray-rate will change because more hares will be able to survive, thus more individuals for reproduction, so the end result will be increasing population of hares.

the predator-rate will remain pretty much the same because there will be more than enough pray, but the hunting success rate is stagnant.