Yes, you can attach files though you need to download them first, or have them in your camera roll/gallery. I don't think you can record but there are several websites and apps where you it allows you to.
<h2>If you have more questions, please comment!</h2>
Hola!! Your answer for this question is oficina de correos.
1.) If you translate the question you get:
I need to buy an envelope in a ____
post Office
Bank
Bakery
Museum
2.) From the options, the best answer will be the Post Office. You can buy an envelope there.
I would go with "el museo".
No sé el libra Cuéntame sobre eso para poder ayudarte
