Answer:
The use of two exclamation points.
Explanation:
I believe this would be the best answer choice. Generally, exclamation points create a sense of urgency, for example: "Sally, I need those work summaries right now!" creates a sense of urgency, as the speaker emphasizes the importance of receiving the reports immediately.
In the case of this poem, the use of two exclamation points in the phrase "And fare thee weel, my only luve! And fare thee weel a-while!" creates a sense of urgency, as the poet is expressing his urgent desire to return to his lover as soon as possible, no matter the distance.
