Why might construction crews want to install pipes before the foundation is poured
A. Pipes form an important component of the structural integrity of a foundation.
B. All utilities, including electrical and HVAC, are installed before the foundation is laid.
C. Plumbing must feed into municipal water and sewer lines buried below the foundation.
D. Plumbing crews are more expensive than concrete masons; therefore it is cheaper if they do their work first.

The answer is choice C

Explanation:

As during construction ,the site is cleared for all debris before laying out the foundation. Even the sewer lines are dug out .

So it will be useful for the construction crews to  connect the pipes to the sewer lines before the foundation is poured.

But usually the steps take in construction activity is:- first the site is cleared for the foundation to be poured  and once the foundation wall is set , then all utilities , including plumbing and electrical activities are done.,

After this process is over, the city inspector comes to check whether the foundation has been laid down as per the code of construction.

Only after that the rest of the construction activity follows through.

the clapeyron equation (also called the clausius-clapeyron equation) relates the slope of a reaction line on a phase diagram to fundamental thermodynamic properties.

explanation: