Final answer:
The correct answer is a, has happened, which is used because the sentence describes a repeated past event using the present perfect tense, which includes the auxiliary verb 'has' and past participle 'happened'.
Step-by-step explanation:
The correct answer to the question "Duresa has lost his passport again.Its the second time this _____ ." is option a, has happened. This is because the sentence is describing an event that has occurred again in the past, and the present perfect tense is used to talk about experiences or changes that have occurred over time.
In English grammar, present perfect is formed with the auxiliary verb 'has' for third-person singular, which in this case is 'Duresa', and the past participle of the main verb, which is 'happened'.