Ozonolysis of alkenes involves the addition of an ozone molecule across the carbon-carbon double bond to form an ozonide, followed by its reductive cleavage (typically using zinc and water) to yield smaller carbonyl compounds (aldehydes or ketones) . By identifying the structures of the carbonyl products, the position of the double bond in the original alkene can be deduced.

Note: The specific chemical structure of the product was missing from the input data, so the exact starting alkene cannot be determined. Option 1 is marked correct based on the provided probable answer.