Which of the Following Statements Is True About Certainty of Paternity

Multiple Choice

Which of the following statements is true about certainty of paternity?

A) Certainty of paternity is high in most species with internal fertilization because the acts of mating and birth are separated by time.
B) Certainty of paternity is low when males guard females they have mated.
C) Certainty of paternity is low when egg laying and mating occur together, as in external fertilization.
D) Paternal behavior exists because it has been reinforced over generations by natural selection.