Respuesta :
"30 feet" is the one among the following choices given in the question that is the maximum number of feet that a safety net can be placed directly below the working surface. The correct option among all the options that are given in the question is the third option or option "c". I hope that the answer has come to your help.
30 feet
A safety net help to defend people from damage after coming from elevations by limiting the distance they fall off, and swerving to disperse the influence energy. Safety nets are utilized in architecture, building preservation, recreation, or other activities. Safety nets must be attached as near as possible under the cover on which workers are operating but in no event more than 30 feet beneath. When nets are applied on platforms, the possible fall area must be unobstructed.