 
 <translate> Testosterone stimulates the reproductive organs to develop into male organs. Male mammals have a tube-like organ called the 'penis'. Testosterone causes the penis to develop.
So, the final answer is (F). <ibo> Testosterone na-akpali akụkụ ahụ́ ndị na-emepụta nwa ka ha ghọọ akụkụ ahụ́ nwoke. Ụmụ anụmanụ ndị na-enye nwa ara nke nwoke nwere akụkụ ahụ yiri tube nke a na-akpọ'mkpịsị'. Testosterone na-eme ka amụ na-eto. Ya mere, azịza ikpeazụ bụ (F). 