Answer: Option (C) is the correct answer.
Explanation:
In a chemical reaction the ratio between the amounts in moles of any two compounds is known as mole ration.
In the given reaction, [tex]2C_{2}H_{6} + 7O_{2}(g) \rightarrow 4CO_{2} + 6H_{2}O[/tex]
There are 7 moles of oxygen and 6 moles of water.
Thus, ratio of diatomic oxygen to water will be [tex]\frac{7}{6}[/tex].