This question asks us to guess what is being discussed in class. Okay, I am guessing enol chemistry. In order for that to work, you must convert the aldehyde into the unsaturated aldehyde by a bromination-dehydrobromination sequence. Then you can make a silyl enol ether, radical halogenation should give the more stable alkene, which I am guessing will place the bromine at the terminal position. Hydrolysis of the enol ether and catalytic reduction would give the product.
So, is the current topic enol chemistry?