Answer:
E) a natural mutagen.
Explanation:
Aflatoxin is a toxin byproduct produced by the fungi especially Aspergillus molds which grows attached to the roots of various crops like the peanuts, wheat and many others.
The aflatoxin is considered a carcinogen and a mutagen as it causes certain changes in the structure of DNA. The aflatoxin mainly affects the liver and causes a mutation in the genes of the liver and since the aflatoxin is produced naturally by the molds, therefore, is considered a natural mutagen.
Thus, option-E is correct.
Mechanical weathering looks like the answer
