Pain receptors in the skin send signals to the cns for processing. these pain receptors are an example of

afferent conducting or conducted inward or toward something (for nerves, the central nervous system; for blood vessels, the organ supplied).

d.

hope to be marked brainliest

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.