The most common was is your phone
The clearer the resolution screen is it is better seen through the graphics. Say you have a bad computer screen, well your graphics are going to be bad. The better and higher quality it is will be the better you can see your images.
The answer is the first response, by order of elimination, you can eliminate the rest.
HTML is a programming language that is used to design websites. You don't need to program a website to make a post on instagram, especially if you are using the app.
If you check the app store on your phone, you can find instagram in the app store, which lets you access it from your mobile device. Thus, the third option is wrong.
Finally, just read the description of instagram. It was made for sharing pictures, so the last option is wrong.
