Which statement correctly explains the aspect “Lawlā and lawmā” in the example “لَوْلَا / لَوْمَا”?

Inshāʾ and Tamannī: Requests, Wishing, Exhortation, and Reproach

• The basic nature of inshāʾ — Inshāʾ: discourse that does not merely report a prior fact.
• Defining tamannī — Tamannī: wishing for something desired.
• Lawlā and lawmā — Why do you not do so?
• Why use hal instead of layta? — Is there an intercessor for me? / If only there were!