The most common ""disorder of sexual development"" is . This condition occurs when children whose genetics indicate they are female develop ambiguous genitalia as a result of excess androgens while in the uterus.

Androgen insensitivity syndrome

Explanation:

Androgen insensitivity syndrome is a sexual development disorder occurs before birth and during puberty.

Androgen insensitivity syndromes is caused because during pregnancy the bodies are unable to respond to androgen that left excess of androgen in uterus.

Complete androgen insensitivity syndrome shows the external sex characteristics of females but they do not have uterus.

The partial forms of androgen insensitivity syndrome occurs due to partial use of androgen when in uterus. It develops ambiguous genitalia in which one look completly female but have both male and female characteristics.

Hence, the correct answer is Androgen insensitivity syndrome