单项选择题

Questions 17 to 20 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now, listen to the passage. Which of the following would be the most suitable title of the passage

A.Is a Baby a Human Being
B.Abortion, Race, and War
C.Scientific Aspect of the Controversy
D.When Is the Beginning of Personhood