If you step on a sharp object muscles in your leg will rapidly put your foot away. what is the correct term for this type of reaction?

Reflex arcs can also be more complex. For example, consider what happens when you step on a sharp object. As in the example above, a sensory (pain) neuron carries an impulse to an interneuron in the spinal cord. The interneuron synapses with motor neurons which pull your foot away from the sharp object, just as in the example above. However, if that was all that happened you would probably fall over! The interneuron also synapses with motor neurons which control the muscles of the other leg. These muscles adjust your position so you do not fall. The interneuron synapses with still other neurons, which carry the information about what has happened to the cerebellum (which coordinates the muscular activities) and the cerebrum, so that you become "conscious" of what has happened and can take further voluntary action.

A- a reduction in biodiversity