this is a normal business subject question

In our course, we discussed about motivating, training, hiring and retaining employees. In this new age economy, many companies are offering flexible work schedule, stock options, education training and large bonuses to retain and attract top talent. If you are a HR Manager, what strategy do you think is most important and what do you think is important to employees today and in the future? Would you add or remove any of the above? Please explain and give examples