Precise, specific scope documentation reduces the risk of misunderstanding about exactly what has been authorised, enables accurate planning and resourcing, and provides a much clearer, more defensible basis for legal authorisation and any later dispute resolution than vague language ever could. Framing vagueness as beneficial "creative freedom" (D) actually increases legal and operational risk rather than reducing it, vague language carries real, material disadvantages (contradicting A), and scope precision directly shapes what testers may actually do during live testing, not merely how findings are subsequently written up (B).