The main characters are Ned Wallis, James and Martha Wallis, Mr. Scully
The first option is indirect characterization.
Well metal detectors can help to save a life in the event that someone has a weapon or is armed, the dectector can sense the metal in a gurn, for example, which can sve lives because if that person meant harm on others, the gun can be detected before somethinf terrible happens. Hope this helps!
Its gonna be b trust me i seen this before on my test
