Answer:
Yes
Step-by-step explanation:
The text contains a vague pronoun reference. The pronoun "he" in the sentence "Dan is graduating this coming June" could refer to either Dan or his best friend. To clarify, we could add the word "Dan" before the pronoun "he" to make it clear that we are referring to Dan. The revised sentence would read: "Dan and his best friend go to the same college, but Dan is graduating this coming June."
Here is another way to revise the sentence to clarify the pronoun reference:
Dan and his best friend go to the same college. Dan is graduating this coming June, but his best friend is not.