Read the sentence.The chemicals from the local factory polluted a local well, making the water supply too poisonous to drink.Based on the clues in the sentence, which word would be the best replacement for poisonous?

The sentence says the water contains chemicals and is too poisonous to drink. “Toxic” means poisonous, especially when describing a substance such as contaminated water, so it is the best replacement. “Venomous” usually describes an animal that produces venom, while “harmful” and “destructive” are less precise.

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