Which of the Following Is an Example of the Most

Which of the following is an example of the most powerful message a parent can give to a child about sexuality?

A) Sabine's mother,who is ashamed to discuss about sex directly,buys a video about sex and relationships and makes her watch it.
B) Jeremy's mother reads Bible verses about appropriate sexual behavior to him.
C) Mark's father,who is single,frequently has his dates over to spend the night.
D) Marilyn's mother is unable to answer her daughter's questions so she tells Marilyn to ask her teacher.