Rachel is walking in the woods and feels a sudden pain in the back of her neck. Due to the nature of the pain she recognizes that she has been stung by a bee. In this scenario, which of the following processes has most likely helped her identify the source of her pain?

Perception

Explanation:

Perception  is defined as tendency of a person to listen or see something through sensing it which make the person alert.Sensed information is organized in systematic way for interpretation.It makes a person understand the happening.

According to the question, Rachel is able to identify source of pain is bee stung through perception which is given from sensed information or sensations about nature of pain .  

explanation:

allergens: overstimulate the nerve system

neurotics: attack nerve cells

mutagens: damage or otherwise alter dna sequence

generators: cause defects during growth and development  

carcinogens: cause unchecked cell growth

i hope you get the idea according to me these are the effects that happened.