## **Core Concept**
Fetal movement, also known as quickening, is an important milestone in fetal development. It is a sign of fetal well-being and can be detected by the mother or through medical examination. The detection of fetal movement is related to the gestational age and the sensitivity of the mother or the method used for detection.

## **Why the Correct Answer is Right**
Fetal movement first occurs around 7-8 weeks of gestation. However, at this stage, the movements are not usually felt by the mother. The movements become more pronounced and can be felt by the mother typically around 16-20 weeks of gestation. The correct answer, , corresponds to approximately 16 weeks of gestation, which aligns with the period when fetal movements are commonly first detected by the mother.

## **Why Each Wrong Option is Incorrect**
* **Option A:** This is too early for the detection of fetal movement by the mother. Although movements start around 7-8 weeks, they are not perceivable at this stage.
* **Option B:** This is earlier than the typical time for detection of fetal movement. While some mothers may feel movements earlier, 12 weeks is generally considered too early for most women to perceive fetal movement.
* **Option D:** This is later than the typical time for the first detection of fetal movement. By 24 weeks, most mothers are well aware of fetal movements.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that the first perception of fetal movement (quickening) can vary among women. Primigravidas (women pregnant for the first time) may not feel movements until about 20 weeks, whereas multigravidas (women who have been pregnant before) may detect movements earlier, around 16-18 weeks.

**Correct Answer: B. 16 weeks.**