Question

question 7 of 10
how has the scientific community addressed the safety of chemicals?
a. only new chemicals are tested.
b. existing chemicals are tested if they have never been tested before.
c. chemicals are repeatedly tested, even those that have existed for a long time.
d. chemicals are tested if they are suspected to have caused a problem.

Explanation:

The scientific community is committed to ensuring chemical safety comprehensively. Testing only new chemicals (A) ignores potential risks of existing ones. Testing existing chemicals only if never tested before (B) or when suspected of causing a problem (D) is insufficient as new knowledge or changing circumstances (like new exposure scenarios, combination effects) might emerge over time. Repeated testing (C) allows for continuous evaluation considering new scientific methods, data on long - term effects, and evolving understanding of chemical interactions.

Answer:

C. Chemicals are repeatedly tested, even those that have existed for a long time.