Let's do the process of elimination, Animalia belongs to animals, like lions, leopards, cheeta's, birds, just about every animal, but a sunflower is a plant, so A is out, Fungi, fungi is described as fungses, germs, any microscopic being, so B is out, Plantae describes plants, like tulips, dasies, daffodils, sunflowers and just about any plant life, so C is the correct answer, hope this helps