"The male reproductive structure of a plant produces a sticky substance called pollen. Pollination occurs when a butterfly moves the pollen from the stigma to the ovule."

Which statement will correct the error in the passage? (2 points)

a
Pollen moves from the ovule to the pistil.

b
Pollen moves from the stamen to the stigma.

c
Pollen moves from the stigma to the ovule.

d
Pollen moves from the stigma to the stamen.