In a knee reflex, the impulse that travels from the spinal cord to the knee tendon travels down a a) sensory neuron b) motor neuron c) dorsal root d) ventral root

diagram is missing, but i will try to explain your doubt.

answer:

amplitude is the maximum displacement or distance moved on a point of a vibrating body or wave measured from its equilibrium position.it is equal to half the length of vibration path.

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )

inverse v=i*r

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answer is slate

hope this