When the pollen from one plant falls on the stigma of other flower of the same plant is

Answer: Option B

When the pollen from one plant falls on the stigma of another flower of the same plant is Geitonogamy.
Geitonogamy is when pollen is exported using a vector (pollinator or wind) out of one flower but only to another flower on the same plant. It is a form of self-fertilization.
In flowering plants, pollen is transferred from one flower to another flower on the same plant, and in animal-pollinated systems, this is accomplished by a pollinator visiting multiple flowers on the same plant.