Qu'est ce qui réalise un phénomène physique dans un système automatisés

svp​

a time line cause it goes from 685 to 978

i believe the answer is a or 1

it would affect precipitation by causing flooding in some areas of the world due to climate increasing, causing the glaciers in the northern and southern pole of our planet to melt.

i wish you would have provided choices to simplify it and allow me to give an exact answer.