Answer: A
Explanation: there clearly isn’t no dinosaurs now so it can’t be b or c
Literally from what u eat
It helps the plants create oxygen for us to breathe
My answer: Because the actual thing you might be modelling might be too small or large to replicate, (for example you cannot draw a plant cell TO SCALE because it’s way too small to see with a bare eye).
And if the item is too big, you won’t be able to fit it in a small space; if you were to draw it or create it in 3D.
I hope this helps!
Sorry if the response is too short, try rewording if you need to :)