Please help and explain this question

Please identify the toxin on this list. Glyphosphate, the active ingredient in Roundup brand weed-killer. Fasciculin, a protein that induces muscle contractions that is found in the venom of several species of mamba snake. Asbestos, a naturally-occurring mineral formerly used to make fire-proof tiles and fabrics. Bisphenol A (BPA), a chemical used in the manufacture of plastics