The correct option is B Cladonia rangiferina
Reindeer moss, (Cladonia rangiferina) a fruticose (bushy, branched) lichen found in great abundance in Arctic lands. Reindeer moss is not a moss; it is lichen, which is a combination of fungus and algae sharing a symbiotic relationship and forming a new plant. It rarely reaches more than 17 centimetres in height. Caribou and reindeer can smell lichen through the snow, and paw down to eat it. Reindeer moss has the ability to convert sunlight into food in low temperature and low light conditions. Its tissue is not easily damaged by frost. Thus, the correct answer is option B.