The gerund in the sentence "I enjoy wrapping presents" is "wrapping." A gerund is a verb form that functions as a noun and ends in "-ing." In this sentence, "wrapping" functions as the object of the verb "enjoy." To identify the gerund in a sentence, you can look for the verb that ends in "-ing" and determine its role in the sentence. In this case, "wrapping" is the gerund because it is being enjoyed. So the correct answer is B.
