Which of these describes the most common way that material is added to a continental shelf?

Had to look for the missing options and here is my answer.

The one that gives the best description of the most common way how material is added to the continental shelf is this: "Deposition of continental sediments". This deposition includes biological, physical, and even chemical processes that occurred in a span of time. Hope this helps.

It's either -limiting factors or -scarce resources but i'd go with my first answer since the food and water are abundant they really aren't scarce