Which statement correctly combines the meaning and ruling of nafl?

Prescribed Acts and Prohibitions: Fard, Wajib, Sunnah, Nafl, Haram, Makruh, Azimah and Rukhsah

• A binding act supported by decisive proof
• An act prohibited by decisive evidence
• An additional act beyond binding duties; reward for performance without punishment for omission
• An act allowed under coercion while its prohibition remains