How can a mother explain the presence of a fetus in her womb to her six-year-old son, who has repeatedly asked her about it?

Parents are advised to pay attention to their children's questions about how they were born without showing embarrassment. The mother can answer by clarifying Allah's power in creation, and how He brings forth the living from the dead, created Adam from dust, and how the fetus develops in the womb from a drop of fluid to a clinging clot and a lump of flesh, nourished in its mother's belly, then delivered by Allah's power. The mother can support her answers with verses from the Holy Quran, which broadens the question to encompass Allah's power and wisdom.