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$00$:$41$:$46$

You must achieve a score of ${30}_{?}$ questions answered correctly out of ${39}_{?}$ total questions to pass the final assessment.

Question

$24$ of $39$

In the last month you have received several complaints from building occupants about the indoor air quality $($IAQ$).$ Additionally, you notice an unanticipated upward trend in the electric bill over the last $12$ months. What is the most likely cause?

Cracks in the foundation near the electrical service panel.

Interior wood posts that are decaying.

Standing water in the basement indicative of a failed sump pump.

Deterioration and unwanted openings around windows or doors.

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award up to $1$ point