we have to select the terms that are associated with communication between neurons.
synapse is the gap between two neurons that is there to transmit the signal.
from one neuron to other neuron the signals transmit through neurotransmitter which is a chemical and finally after reaching it becomes the electrical signal
therefore, option 4th is correct that is: synapse,electrical signals and neurotransmitter.
answer; ////i believe that the correct answer is loud noise; //////////////
the description suggests that the adult wasps are commensals and caterpillars are the hosts which nourishes and keep their eggs inside them but the caterpillars die when larvae continually feed and become adult.