Which of the following is an example of a monosynaptic reflex?

In a monosynaptic reflex, there is only one synapse between the sensory neuron and the motor neuron in the reflex arc. The sensory neuron directly synapses with the motor neuron, which then sends a signal to the effector, resulting in a rapid and automatic response. An example of a monosynaptic reflex is the knee-jerk reflex.