 
 <translate> To answer the above question, the relevant sentence is: Daniel Lee Truhitte (born September 10, 1943 in Sacramento, California) is an American actor, best known for his portrayal of Rolfe Gruber, the young Austrian telegraph delivery boy who performed "Sixteen Going on Seventeen", in the film The Sound of Music (1965).
So, the final answer is Daniel Lee Truhitte. <hau> Don amsa tambayar da ke sama, jumlar da ta dace ita ce: Daniel Lee Truhitte (an haife shi a ranar 10 ga Satumba, 1943 a Sacramento, California) ɗan wasan Amurka ne, wanda aka fi sani da rawar da ya taka na Rolfe Gruber, matashin saurayi mai isar da sakon waya na Austrian wanda ya yi "Sixteen Going on Seventeen", a cikin fim din The Sound of Music (1965). Don haka, amsar karshe ita ce Daniel Lee Truhitte. 