According to Mendel’s law of dominance, if we are considering a monohybrid cross between two parents where one parent has a dominant trait (e.g., purple flowers) and the other has a recessive trait (e.g., white flowers), we would expect 25% of the offspring to express the recessive trait when two heterozygous individuals (Pp x Pp) are crossed.
Therefore, the correct answer would be:
B 25