The Present Perfect tense is used to describe actions that started in the past and continue to the present, or actions that happened in the past but have a result in the present.
The structure for the Present Perfect tense with a singular third-person subject (like 'He', 'She', 'It', or a singular noun) is: Subject + has + past participle of the verb + object/complement.
In this sentence, 'He' is the subject. The verb is 'write'. The past participle of 'write' is 'written'.
Therefore, the correct form to complete the sentence is 'has written'. This indicates that the action of writing articles started in the past and has relevance to the present (e.g., his reputation as a writer).
Example: She has lived in London for five years. (She started living in London in the past and still lives there).
Example: They have finished their work. (The work is completed, and the result is that they are now free).
