A:AnswerYes, the iPad 7th Gen supports Apple Pencil, but ONLY the 1st Generation Apple Pencil, or you can get the cheaper option which is the Logitech Crayon.
A:AnswerYes you can download the MS Office app but you'll be required to pay to access it. Try looking on YouTube for workarounds... and yes it has a headphone Jack.
A:AnswerHello. Yes, Zoom will work on this device. However, if you will be using it with the keyboard, the camera placement on the iPad causes a weird angle that makes you look like you are looking away and not at the screen. This is only an issue if you will be putting the iPad sideways. But otherwise, Zoom works great.