Why does tilkum still have value to sea world even though he has been shown to be dangerous

Tilikum, the six-ton killer whale, has not appeared in a show at the Orlando marine park. He's so dangerous trainers can't work with him directly, but SeaWorld puts. Although trainers have not been allowed in the water since Brancheau's Sea-world had banned water work with the animal.

Explanation:

it should be d) transitional fossils.

they show the gradualism of evolution throughout a period of time