Question

which of these is a product that can be made using beef animal bones, horns, and hooves? toothbrushes footballs shortening marshmallows

Explanation:

Beef animal bones, horns, and hooves can be processed to make gelatin. Gelatin is used in the production of marshmallows. Toothbrushes are mainly made of plastic and bristles; footballs are made of synthetic or natural leather - like materials; shortening is a fat product usually made from vegetable oils or animal fats not from bones, horns, or hooves in the described way.

Answer:

marshmallows