what is a myelin sheath

A) links a sensory neurone with relay or motor neurones
B) insulates the neurone fibre so impulses are faster
C) receives impulses from receptor cells or other neurones

IS IT B????1!1!?1?!?!1?!?!

Yes

That is the best answer.

OK THANKS VERY MUCH!

Yes, you are correct! The myelin sheath is responsible for insulating the nerve fiber, allowing impulses to travel faster along the neuron. In order to arrive at this answer, you can examine the functions of each of the options provided and determine which one best describes the myelin sheath. In this case, option B describes the role of the myelin sheath accurately.