Read the following paragraph and answer the question: The day I started college, I was nervous. Though I was still a teenager, I felt like I suddenly had a million more responsibilities; I had become an adult. A productive member of my society. By walking into a university, registering for classes, speaking to my counselor, and buying text books, I felt I had finally entered the real world.

Which of the following is a correction for the sentence fragment in the paragraph?

The day I started college. I was nervous.
By walking into a university.
Registering for classes. Speaking to my counselor.
I was a productive member of my society.