Which event shows how Eckels' character developed over the course of the story

O the moments after he first sees the Tyrannosaurus rex

O his sensing of the change upon his return to the present day

O when he ends up standing in the jungle

Ohis time machine ride back to the present day

Answer: The moments after he first sees the Tyrannosaurus rex

Explanation:

The moment when he sees a dinosaur is showing the readers how the character's ideas and thoughts are changing in the story.

An important moment that causes his changing is a big fear, discourage and disbelief in himself. Eckel said that that situation is too much for him and he couldn't take it.

After that, Travis decided to let Eckel go home and later on, Eckel realized that his action was wrong.