Answer: Not only was the tour fun, but it also inspired me to apply for an internship at the library so I can investigate becoming a librarian.
Step-by-step explanation:
This would be the most appropriate sentence for the ending of the personal statement because it is giving us the final impression of the everything that the writer has saw and experience during the time in library. His final impression is that this inspired him and he liked it.
Also, since this is about the personal statement it is good to have this kind of sentence at the end because he is talking about how he felt about the whole situation.