I don't think it's entirely clear but I'd say "these". If nothing else, there is the fact that he gives her multiple items. I suppose he could have said "this" as in "this pile of things" but I'm not convinced.

Quote Originally Posted by Оля
- Okay...
- Okay...
- Here you go, here you go. Here you go.
- It's the biggest day in my life.
- I know. Okay.
- Biggest day of your life? What about the day you got married? Hey? You wedding day, what about that? What about the day you first laid eyes on your wife, that magic moment, what about that?
- I meant the biggest day of my life, businesswise.
- I know.
- You know that, right?
- Go! Yes.
- Thanks for the input.
- You're welcome.