Match List-I with List-II
| List-I (Principle of Management) | List-II (Explanation) | 
|---|---|
| (A) Unity of Command | (I) Employees should receive orders from one superior only | 
| (B) Unity of Direction | (III) Each group of activities with the same objective must have one head and one plan | 
| (C) Scalar Chain | (II) The line of authority from the highest to the lowest ranks in the organization | 
| (D) Division of Work | (IV) The work assigned to each worker should be clearly defined and clarified | 
Rearrange the following parts to form a meaningful and grammatically correct sentence: 
P. a healthy diet and regular exercise 
Q. are important habits 
R. that help maintain good physical and mental health 
S. especially in today's busy world