The letters 'leukkcn' can be rearranged to spell the body part knuckle.
Those letters can be rearranged to spell knuckle.
It is knuckle
eye
If you are referring to the body part that spells the name of a dessert in English, the word is "pie" which in Spanish means "foot".
eye
The name of a human body part that is also the name of an orange but spelled differently from the word relating to a navy/navies is "navel" (referring to the belly button). The fruit "navel" orange is spelled the same way but pronounced differently, while the naval/navies term refers to military matters at sea.
The word for the part of the body that allows us to hear is spelled as "ear."
Eye.
eye
The body part that is spelled the same backward and forward and upside down is "eye." This three-letter word has a symmetrical structure that remains unchanged when viewed in different orientations.
No, you were right in the first part of the question. His last name is indeed spelled C-L-A-R-K. :)
neck