what is the product when this compound undergoes oxidation with an excess of the o in the presence of water?

what is the product when this compound undergoes oxidation with an excess of the o in the presence of water?
Answer
Explanation:
Step1: Identify the type of alcohol
The given compound is a primary alcohol as the -OH group is attached to a carbon that has two hydrogen atoms.
Step2: Recall oxidation of primary alcohol
Primary alcohols on oxidation with an excess of oxidizing agent [O] in presence of water first form aldehydes and then further oxidize to carboxylic acids.
Step3: Determine the product
The product of the oxidation of the given primary - alcohol will be a carboxylic - acid. The structure of the carboxylic acid formed from the given alcohol will have a -COOH group in place of the -OH group.
Answer:
The fourth option (the one with the -COOH group)