The word "listened" is what is modifying the word "patiently," as shown in option B.
In summary, we can say that modifying is a special kind of adverb. This word can use another word capable of promoting a descriptive and specific meaning. An example of this is how the word "patiently" specifies and limits the word "listened."
More information about adverbs at the link:
https://brainly.com/question/10707375