Question

Which sense does the imagery in this line appeal to?

And the grumbling grew to a mighty rumbling;

Answer 1

It would be sound because of grumbling growing to a mighty rumbling 

Answer 2

The sense that is being appealed in this line is sound.

Step-by-step explanation:

The grumbling is compared in this line to a mighty rumbling, to a strong sound that penetrates in the head. A boom that reverberates. By reading those carefully chosen adjectives that the author uses in order to create a proper image of the sound in the reader's head, the audience can imagine how deep and strong the grumbling was and that is the main objective of this literary device.