Answer to Question 1
ANS: C
The hormone hCG is produced by the chorionic villi of the placenta. It is present in the pregnant woman's blood and urine as early as 1 week after ovulation.
Answer to Question 2
ANS: B
The pregnant woman usually senses the fetal movements between 18 and 20 weeks' gestation. The first time this occurs is referred to as quickening.