Fred and Sarah communicate by sign language. Sarah would like to sign something now to Fred. In order to use sign language, what area(s) of her brain will Sarah need to use

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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.

answer; regard the action of other people negatively;