प्रसवपूर्व विकास के दौरान, भ्रूण (Fetus) का जीवन और पोषण मुख्य रूप से किस अंग पर निर्भर करता है?

Which stage of human development occurs before birth?

Choose the correct chronological sequence of stages in prenatal development.

Which period of the prenatal stage is often referred to as the 'golden trimester'?