The structure labelled s is used for the synthesis of

The structure labelled s is used for the synthesis of
A. ATP that is required for bonding the axon terminal to the receptor sites on the dendrite
B. ATP that is required for the production of transmitter substances
C. Carrier molecules that transport sodium ions across the synapse
D. Enzymes that are required for the removal of transmitter substance for the synapses l

If the large molecules contained in the structures labelled T must pass across the region labelled R to bond structures labelled V for synaptic transmission of nerve impulse to occur, then it can be hypothesized that terminal of the axon would carry out
A. Endocytosis
B. osmosis
C. exoctyosis
D. Phagocytosis