I do not known since I am super young
I believe the correct answer would be the second option. Scale models that show what a large object will look like are a visualization model. It is a physical representation of a certain object which has a consistent scale factor with the original object.
1 atm = 760 mmHg
912 mmHg * (1 atm/760 mmHg) = 1.2 atm
We are limited to 3 significant digits from 912 mmHg, so your final answer will be 1.20 atm.