The correct option is B all of these
Seaweeds are large multicellular algae living in the sea or in intertidal zone. They are common species of the Chiorophyta, Rhodophyta and Phaeophyta. The seaweeds are a polyphyletic group. Seaweeds, especially brown algae, are used as food for domestic animais in different parts of the world. Sargassum, Fucus and Laminaria are eaten by cattle in Scotland, Ireland and Iceland. Macrocystis sp. and other kelps being rich in vitamins A and E are served as cattle fodder.