How did merchants of the Mauryan Empire use the Khyber Pass

the first question's answer is a.

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.

could you show the options for the answers? : )

answer; form new memories;