Key forensic teaching point: in child sexual assault an intact hymen never excludes rape. The reason is anatomical. In a young child the genitalia are small and the hymen is set deep within the vulva, so an assault often produces only vulval or partial penetration that does not reach the hymen. Test the options against this. Saying the hymen tears easily because it is thin or because it lies in front contradicts the clinical reality that it commonly stays intact, so options 1 and 2 are wrong. Elasticity does help protect the hymen, but the option that the examiners want for a child specifically is its deep position. Hence the hymen hardly tears because it is situated deep, making option 4 correct.