How does Ray Bradbury foreshadow the ending in “the Veldt”?

Each time the parents check on the nursery, foreshadow of their death is evident. furthermore, something is being eaten in the background of the veldt there is even the seen of both parents believing the lions are coming alive and running towards them

Explanation: hope this helps :)

what are the excerpts?

1 - a

2 - a

3 - c

4 - b

5 - d