Art is controversial because people often don’t share the same appreciation of art.
This painting is an attempt to show more of a pause in time captured in a paining/ a memory.
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.
Answer:
The first one is C and the second one is B.