The correct option is A Neuron
Cyton is a cell body of the neuron containing a nucleus, cytoplasm.
Synapse is a structure that allows a neuron to pass an electrical signal or chemical signal to another neuron.
Axon is a long, thin, hair-like process arising from the cell body of the neuron.
A neuron is the functional unit of nervous tissue. It contains cyton or cell body, long, thin hair like the process called axon and many short branches called dendrites. Therefore, option C is correct.