Option B is correct because the textbook explicitly states that 'Yeast, on the other hand, can put out small buds that separate and grow further.' This clearly indicates that Yeast reproduces through budding. The context also mentions that Plasmodium reproduces through multiple fission (not budding), stating it 'divide into many daughter cells simultaneously by multiple fission.' While the text discusses budding in Hydra, none of the other options (Amoeba, Plasmodium, or Leishmania) are mentioned as reproducing through budding in the provided context.