Explanation:

- To find the average number of employees in companies A, B, D, and E, sum their total employees:

- Company A: 720

- Company B: 690

- Company D: 1050

- Company E: 1230

- Total employees in these companies = 720 + 690 + 1050 + 1230 = 3690

- Average number of employees = Total employees / Number of companies = 3690 / 4 = 922.5

- Option 1: 922.5 is correctly calculated based on the given data.

- Options 2, 3, 4, and 5 are incorrect because they don't match the calculated average.

Option 1 is the correct answer.