The correct option is C pollination
∙ The transfer of pollen from the anther to the stigma of a flower is known as pollination.
∙ If the pollen lands on the stigma of the same flower or on the stigma of another flower of the same plant, it is called self-pollination.
∙ When the pollen of a flower lands on the stigma of a flower on a different plant of the same species, it is called cross-pollination.