An electrically "charged mist" will be found in a __________.

Correct Answer: Option B — cargo tank during Butterworthing

Butterworthing involves high-pressure water jets that create a fine mist within the cargo tank. This mist can become electrostatically charged due to friction and droplet separation. If the charge accumulates, it can create a spark discharge, which is a significant ignition hazard in the presence of flammable cargo vapors.