I think the answer might be D
Answer: If you are skipping one note just count one line or space after the specific note. If you are skipping two notes then go up or down by two lines/spaces.
Explanation:
Neurons communicate with each other via electrical events called 'action potentials' and chemical neurotransmitters. At the junction between two neurons (synapse), an action potential causes neuron A to release a chemical neurotransmitter.