Asingle motor neuron and the population of muscle fibers that it innervates is called a(n):

Motor unit

Explanation: Motor unit is a term used to describe a single motor neuron innervating the fibers of skeletal muscles. The axon endings of this motor neuron is in contact with the muscle fibers. The fibers in the motor unit are all of the same kind, but the number can vary from muscle to muscle. Activation of the motor unit causes contraction of the muscle fibers.

post-impressionism is a predominantly french art movement that developed roughly between 1886 and 1905, from the last impressionist exhibition to the birth of fauvism. post-impressionism emerged as a reaction against impressionists' concern for the naturalistic depiction of light and colour.

explanation:

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.