Question

The sheath that speeds up the nerve impulse is the
a. dura mater
b. neurolemma
c. pia mater
d. myetin sheath​

Answer 1

Explanation:

myelin sheath is your answer

Answer 2

The answer is myelin sheath, because wherever it is present, the nerve impulse will travel by jumping (I know this is not the technical name but this is what actually happens) and hence the speed is increased.
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