Most people would say that it is impossible to capture or even rescue a Brachiosaurus because of their tremendous size, however, Brachiosaurus was both on Isla Nublar since Jurassic Park. Reaching up to 15 meters tall and 26 meters in length, Brachiosaurus towers over every dinosaur in the franchise, other than Mamenchisaurus, and even towers over Mosasaurus. However, the volcanic eruption on Nublar will contribute to the dehealth of the island population, including the Brachiosaurus. We have even seen a teaser photo of a Brachiosaurus skeleton for Fallen Kingdom, which means that I think that in order for Brachiosaurus to make a triumphant (or rather worrying and heart-breaking) appearance, there needs to be just ONE Brachiosaurus. Yes, a last surviving Brachiosaurus on the dying Isla Nublar would be easy, time-saving, and quick to capture to save time for the volcanic eruption.
What do you guys think about this theory?