Concept:Authorized share capital is the total value of shares a company is legally allowed to issue. It equals the nominal capital.Explanation:The nominal capital is 5,000,000 ordinary shares at 50 kobo each.Convert 50 kobo to naira: 50k=N0.50.Authorized share capital = number of shares × par value per share.5,000,000×0.50=N2,500,000.The details about offering 80% and realizing 50% do not change the authorized capital.Answer:N2,500,000Option D.