The correct answer is: Only assumption I is implicit.
The statement “Blue tie would help us identify our staff from others” implies that the company needs to identify its staff. This is because the statement suggests that wearing a blue tie would make it easier to distinguish between the company’s staff and other people. The statement does not imply that blue tie is the latest fashion. This is because the statement does not mention anything about fashion.
Here is a table that summarizes the assumptions and the reasons why they are implicit or not implicit:
Assumption | Reason
——- | ——–
I. The company needs to identify its staff. | The statement suggests that wearing a blue tie would make it easier to distinguish between the company’s staff and other people.
II. Blue tie is the latest fashion. | The statement does not mention anything about fashion.
I hope this helps! Let me know if you have any other questions.