Sorry for the bad quality.

the answer is 1. can someone pls explain?

This is because the ketone group present at the bottom is less hindered and so will first react with diol and diol will thus act as a protecting group. When liAlh4 is added only hindered ketone will be available for reaction , so it will reduce it to an alcohol. And when h+ is added finally the diol get removed and ketone is formed again. So ans is 1.

Above group is more hindred so reaction take place at bottom ketone and actel formed. Then in second step hydrolysis of acetal and reduction of keto group take place.Hope it clears. If still u have doubts then please clarify. If u like answer then please approve the answer.