What is the function of the placenta? a. it protects the vagina. b. it fertilizes an egg. c. it nourishes the embryo. d. it covers the cervix.

 The placenta is an organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply, fights against internal infection and produces hormones to support pregnancy.

This question only came through to answer now so I apologize for the lateness in response. The Big Five traits of personality (OCEAN) are five broad domains which define human personality and account for individual differences in people. Therefore in theory, the correct answer here would be B. They are made up of five words which are openness, conscientiousness, extraversion, agreeableness and neuroticism. The big five is more complex than just five words but each word has a deeper meaning to them in terms of personality.