The density of oxygen is 0.001429 grams per cubic centimeter. To express this in scientific notation, we need to move the decimal point three places to the right, which gives us \(1.429\). Since we moved the decimal three places to the right, we multiply by \(10^{-3}\).
So, the correct scientific notation for the density of oxygen is:
1.429 X 10^-3
Therefore, the correct answer is: 1.429 X 10^-3.