OPT:
(i) Cut sweet potatoes into strips or pieces. Firm cut the extra sweet potatoes into small chunks.
(ii) Peel the bottom layer of the sweet potatoes. At the bottom of the sweet potatoes are 2 or 3 colored pieces of tough vegetable.
(iii) Get out one small peeler or knife and grate a small stick of butter into the potato. Add a pinch of salt to taste for flavor.
(iv) Sweet potatoes are not very easy to peel safely so generally don't let a child do this. Chop the sweet potatoes into disks about an inch thick.Choose from options above and answer: What most naturally follows?

How to make healthy marshmallow sweet potatoes
Peel sweet potatoes, for instance with a potato peeler or knife.
A small sharp non-serrated knife, preferably without a pointy point (to protect the user), is a good option. The skin is thin and the potatoes are hard, so take a narrow strip at a time to avoid jamming the knife and also to avoid wasting potato.
Answer:
(iv)