The main function of the myelin sheath is to insulate the axons of the neurons (the fourth opton).
As it does that, it also speeds the transmission of the impulses:without it, the transmission would be slower (second option)
Ps. Multiple sclerosis is the illness of the myelin sheath
Metaphor is " I could not bear the idea that any one should throw you into the shade"
C juliet is too young to get married
I’m not 100% sure but I think the answer is A. I hope this helps!
