Amelie wants to make her home as safe as possible for her family. Which step can best accomplish this? Ensure firearms are loaded.
Store medicine on a bottom cabinet shelf.
Test to see whether a carbon monoxide detector works.
Transfer all chemicals to new, unlabeled containers.

test to see we there a carbon monoxide detector works

reason:

Carbon monoxide alarms are the most effective way to detect carbon monoxide in the air and alert you to the presence of the dangerous gas

C.  test to see we there a carbon monoxide detector works

Explanation:

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well u can message somebody when u answer 1000 questions