A Unique Selling Proposition (USP) is the distinctive feature, benefit, or value that sets a product, service, or brand apart from competitors.
It answers the question: "Why should customers choose this over alternatives?"
Match List I with List II. 
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