Sure, I'd be happy to help with that question.
In a reflex arc, the neuron carries the action potential from the sensory receptor to the spinal cord. This is the first step in the reflex arc.
Next, in the spinal cord, the sensory neuron synapses with an interneuron. The interneuron then transmits the signal to a motor neuron.
Finally, the motor neuron carries the signal from the spinal cord to the effector (in this case, the muscle in Juan's hand). This causes the muscle to contract and drop the hot utensil, protecting Juan from a worse burn.
Overall, the reflex arc is a quick and automatic response that helps protect our bodies from harm by bypassing the brain and allowing for rapid reactions to potential dangers.