Answer:
A) how multiple primary sensory neurons synapse on a single secondary neuron.
Step-by-step explanation:
The correct answer is B) None of these choices are correct.
Convergence refers to the process by which multiple primary sensory neurons synapse onto a single secondary neuron. This process allows for the integration of information from multiple sensory inputs, increasing the sensitivity and selectivity of the secondary neuron. Therefore, option A) is the correct statement.