The correct options are
A Amoeba
B Hydra
C Yeast
The process of reproduction, where the organisms reproduce without gamete formation is called asexual reproduction. Budding and fission are asexual modes of reproduction. Amoeba reproduces by binary fission. Hydra and yeast reproduce by budding. Human beings reproduce through sexual reproduction, which involves gamete formation, fertilisation, followed by embryo development and child birth.