Question

question 17 of 20 : select the best answer for the question. 17. certain species of fish are unsafe to consume in high quantities because these fish
a. ingest other fish that are poisonous to humans.
b. contain vitamins that aren’t water - soluble and can cause toxicity.
c. have high levels of metals in them from cancer - causing pesticides.
d. are endangered species.
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Explanation:

• Option A: Some fish (like predatory fish) ingest other fish that may have toxins (e.g., ciguatera - producing fish), making them unsafe in high quantities.
• Option B: Fat - soluble vitamins (like A,D) can be toxic in excess, but this is not the main reason for fish being unsafe due to consumption quantity related to their species' nature.
• Option C: Metals in fish are more from environmental pollution (like mercury from industrial waste) rather than cancer - causing pesticides (pesticides are more organic pollutants and less about metal accumulation in fish in this context).
• Option D: Endangered status of a fish species is about conservation, not about safety for human consumption quantity.

Answer:

A. ingest other fish that are poisonous to humans.