The correct option is B Ceiba
The 'white silk cotton' or Ceiba tree (Ceiba pentandra) is one of the largest trees in the American tropics. The fibers are almost pure cellulose, buoyant, impervious to water, and have a low thermal conductivity, but they do not lend themselves to spinning. It is also called as, kapok fiber. The kapok fiber, which is eight times lighter than cotton and five times more buoyant than cork was used as the flotation for life preservers. In addition to these attributes the kapok fiber is totally water repellent and resistant to rot. The kapok fiber is still used in many parts of the world to stuff furniture and mattresses.