Final answer:
Methanol is formed from water through a two-step process. The first step involves the reaction of water with carbon monoxide to produce formaldehyde, and in the second step, formaldehyde is further reduced to methanol.
Step-by-step explanation:
Methanol is formed from water through a two-step process. The first step involves the reaction of water with carbon monoxide to produce formaldehyde:
CO + H2O → H2C=O
In the second step, formaldehyde is further reduced to methanol:
H2C=O + H2 → CH3OH
Therefore, the answer is option 3) Through a two-step process.