The hormone responsible for maturation of mammary gland tissue is:

The correct answer is: B. 3-1-1-0-3.

Choice A reason:

This option suggests the woman has been pregnant four times, which is incorrect. She has had three pregnancies: one set of twins (counted as one pregnancy) and two singletons.

Choice B reason:

This is the correct option. The woman has had three pregnancies (Gravida = 3), one full-term delivery (Term = 1), one preterm delivery (the twins, Preterm = 1), no abortions (Abortions = 0), and three living children (Living = 3).

Choice C reason:

This option incorrectly suggests two preterm deliveries and one abortion, neither of which is indicated in the woman's history.

Choice D reason:

This option incorrectly suggests two preterm deliveries (the twins are counted as one preterm delivery) and does not accurately reflect the woman's history.

GTPAL stands for Gravida (total number of pregnancies), Term births (deliveries after 37 weeks), Preterm births (deliveries between 20-36 weeks), Abortions (losses before 20 weeks), and Living children. Normal ranges: Term (≥37 weeks), Preterm (20-36 weeks)

Choice A reason: Braxton Hicks contractions are irregular, painless uterine contractions that occur throughout pregnancy. They are a probable sign of pregnancy, not a positive sign.

Choice B reason: Fetal movement palpated by the nurse-midwife is a positive sign of pregnancy, as it confirms the presence of a living fetus in the uterus. It can be detected as early as 16 to 20 weeks of gestation.

Choice C reason: A positive pregnancy test is a probable sign of pregnancy, as it indicates the presence of human chorionic gonadotropin (hCG) in the urine or blood. However, it is not a definitive sign, as other conditions can cause elevated hCG levels.

Choice D reason: Quickening is the first perception of fetal movement by the mother, which usually occurs between 16 and 20 weeks of gestation. It is a presumptive sign of pregnancy, not a positive sign.