The correct option is D apomixis
Apomixis in flowering plants is defined as the asexual formation of a seed from the maternal tissues of the ovule, avoiding the processes of meiosis and fertilization, leading to embryo development.
Sporulation refers to the formation of spores from vegetative cells.
Budding is a type of asexual reproduction in which a new organism develops from an outgrowth.
Somatic fusion can be defined as a process by which two distinct species of plants are fused together to form a new hybrid plant with the characteristics of both.