The correct answer is D. The correct spelling of the word is "written".
The word "writen" is not a word in the English language. The word "written" is the past participle of the verb "to write". It is used to form the perfect tenses and the passive voice. For example, "I have written a letter" or "The letter was written by me".
The words "stolen", "eaten", and "beaten" are all words in the English language. They are the past participles of the verbs "to steal", "to eat", and "to beat". They are used to form the perfect tenses and the passive voice. For example, "I have stolen a car" or "The car was stolen by me".