Which is not one of the three things that can happen to a preganglionic axon when it reaches a trunk ganglion? -the preganglionic and postganglionic axons can synapse at a higher or lower level -the preganglionic and postganglionic axons can synapse in the sacral region -the preganglionic and postganglionic axons can synapse at the same level -the preganglionic and postganglionic axons can synapse in a distant collateral ganglion