Which sentence uses the past form of an irregular verb???
a My friend is keeping a journal
b Adan has seen that show twice**
c Elsa gave me this book
d We listened to the weather report
No. That's the past perfect tense.
https://www.grammarly.com/blog/verb-tenses/
Study the English verb tenses carefully.
You have chosen the sentence with "has seen" in it. That's past perfect, not past (simple past).
Let us know what you decide. No guessing.