Writing sample

Just had an interview today I think it went well. It is for a state government position. I skipped the first round because I interned there this summer and I also had 2 referrals.

The interview ended at 1 and I sent a thank you email to the panel (4 people) around 3pm. I just now, at 8:30pm, got a reply from one of the panel members asking for a writing sample.

I think this is a good sign? Don’t want to get my hopes up. But I have no clue what kind of writing sample to send. The position is a project management position and it will be working a lot with clients and managing ongoing projects so they’re looking for good communication and organizational skills.

ANYWAYS…my question is what kind of writing sample do I send? Based on the position, is there something specific I should send. I just graduated college in December so I have so much I could send, including my senior thesis which is about 25 pages.

Please give advice 🙏🙏🙏 thank you.