
MacBook Pro has new ninth-generation 8-core Intel processor. Turbo Boost up to 4.8GHz. A brilliant and colorful Retina display with True Tone technology for a more true-to-life viewing experience. The latest Apple-designed keyboard. And the versatile Touch Bar for more ways to be productive. It's Apple's most powerful notebook. Pushed even further.
A: Most printers area support by Apple; the HP may even offer AirPrint, allowing print over Wi-Fi. I do see macOS 11.2 is supported for the printer you mentioned, so you are good to go. You can download the driver here: https://support.hp.com/us-en/drivers/selfservice/HP-Deskjet-3520-e-All-in-One-Printer-series/5162504/model/5162505
A: Yes, via Bluetooth, or one that uses USB-C (or using an adapter)
A: undefined
A: undefined
Q: Is this with the Butterfly keyboard?
A: Yes, it is. The newer 16" (also 2019) has the new Magic Keyboard. https://support.apple.com/en-us/HT201300
Q: What operations system is on it?
A: No. It's not Applesoft Basic. It is whatever the latest version of OS X is.