The correct answer is A.
Relaying signals from the neuron to other cells is a function of the axon. An axon is a neuron that typically conducts electrical impulses known as action potentials, away from the nerve cell body.
In certain sensory neurons, such as those for touch and warmth, the axons are called afferent nerve fibers and the electrical impulse travels along these from the periphery to the cell body along another branch of the same axon.