Final answer:
Quickening is not a completely accurate method of dating pregnancy as it refers to fetal movements and doesn't provide exact gestational age or due date information.
Step-by-step explanation:
Quickening is not a completely accurate method of dating pregnancy. Quickening refers to the first time a pregnant woman feels fetal movements, which typically occurs between 18-25 weeks of pregnancy. It is not an accurate method of determining the exact gestational age or due date of the pregnancy, as fetal movements can vary between individuals and may depend on factors like the position of the fetus and the mother's body composition.