In Text I, the idea stated in italics corresponds to the meaning expressed by the boldfaced verb phrase in
a) “First, you should realize that the oil industry isn’t just drilling rigs, pumpjacks, and gas stations.” (line 5) – probability
b) “For most positions, you must have a valid driver’s license.” (line 16) – ability
c) “You should not have any medical condition which would make it unsafe for you to operate machinery.” (line 18) – obligation
d) “You don’t need to live in the city where your employer is located,” (lines 19-20) – remote possibility
e) “A recent hearing test and/or medical evaluation may be required.” (line 33) – concrete possibility