1) the children are watching a documentary now
2)bruce did not have a pet when he was a child
3) sauroposeidons are the largest dinosaurs that ever lived
4) the museum usually opens at 9:00
5) patrick loves to play chess with his friends
I believe a because a makes the most sense while the others aren’t really complete
Answer:
because sometimes they tell us things that we didn't know things that are in the past but just when the stories are real.
B) I think sorry if wrong I tried