The answer is option D carcinogens.
Carcinogens are the cancer causing agents like tobacco etc.
Teratogens are those substances which can cause the abnormalities in the fetus, due to the substance taken by mother. Eg : certain drugs
Vectors are those which carries the pathogen and then transmit from one species to another.
Neurotoxin are those which can effect the nerve excitability and block nerve conduction.
Allergens are those substances which cause allergy and they causes release of histamine.
Thank you....
A person with cancer may have been exposed to ________. teratogens vectors neurotoxins carcinogens allergens
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