Which of the following is generally a good way to pick up a firearm to preserve evidence? a. by the barrel b. by the trigger c. by the trigger guard d. any of the above is a good way

C. by the trigger guard

Explanation:

A firearm is a device which consists of projectiles like bullets, pellets and primer mixture which are ignited with a striking effect. The striking effect leads to the burning of the primer mixture or powder charge which is require to produce gases under high pressure which are necessary to propel out the projectile with force to the desire target. The firearms are used for the purpose of crime. The firearm obtain from the scene of crime should handle with utmost care so as to prevent any unwanted firing.

It is safe to pick and preserve the firearm by trigger guard. A trigger guard is a rim that surrounds the trigger. This type of handling will prevent accidental firing and unwanted calamity.  

93.2 ml + 3920 ml = 4013 ml total  

(93.2 ml) * (2.03 m) / (4013 ml) = 0.0471 m

the volume in in l of the diluted solution would be 0.0471 m.