At a minimum threshold, how many milliamps of current through the body produces a condition where most people would be unable to let go of the energized electrical conductor due to involuntary muscular contraction?

Correct Answer: Option B — 10 to 16 mA

The "let-go" threshold for most individuals occurs between 10 and 16 mA. At this current level, involuntary muscular contractions overcome voluntary control, making it impossible for a person to release an energized conductor, posing a severe risk of prolonged exposure and deeper tissue damage.