Question

describe the receptive field. (figure 15 - 2)
the areas of the brain that process the receptor stimuli.
the distance covered by action potentials after receptor stimulation.
the distance the generator potential travels after receptor stimulation.
the area receptive to stimuli monitored by a single receptor cell.
the overlap where many receptors detect stimuli.

Explanation:

A receptive field is defined as the area that a single receptor cell can monitor for stimuli. It is not related to brain - processing areas (which would be more about neural pathways in the CNS), the distance of action potentials (which is more about neural impulse propagation), the distance of generator potentials (generator potentials are local changes), or the overlap of multiple receptors (that's more about receptor interaction rather than the basic definition of a single - cell receptive field).

Answer:

The area receptive to stimuli monitored by a single receptor cell.