Answer:
C. element. oxygen is an element
Explanation:
oxygen is element #8
Answer:
Iron and Oxygen
Explanation:
Fe is Iron and O2 is Oxygen
Based on the information I would assume B, 73 degrees...
It shouldn't be A, 4 minutes on the burner should increase the temperature.
If it were D, it would be beyond boiling, and water takes a decent amount of energy to heat, D should be all vapor.
Same logic for C, it's basically almost boiling.
I would say 73 degrees seems most reasonable for 4 minutes.
