Hi Lavanya,
The topic you have selected, Retention of employees, is a good topic where you can explore more and help the management and also the employees in the company. You will prefer to do the project. You can prepare a questionnaire with 20 questions for employees and get feedback from them. Based on the results, you can consider the major points which, according to employees, are important for retention. Based on that, you can suggest to the company management to consider those points for their employees to retain. By doing this, you will provide valuable suggestions to the company, and you will complete the project.