. The answer to this question depends on the definition of "fetus." Most references define the fetus as being from the period of conception until birth. However, some sources define the fetus as begi

The correct answer is the Fetal Stage, which typically occurs between weeks 8 and 12 of gestation. Evidence to prove this can be found in numerous medical studies and textbooks, such as Moore and Persaud's The Developing Human: Clinically Oriented Embryology, which states, "Normally between week 8 and 12, the gender can be determined by ultrasound as the external genitalia become distinguishable. The labioscrotal folds become the labia majora, and the genital tubercle becomes the penis or clitoris."