Final Sentence:
People with a high BMI and a genetic predisposition to obesity have a lower risk of heart disease compared to people whose extra weight is related to environmental and lifestyle factors alone.
(B) → (A) → (D) → (C) – ✔ Option 3
The sentence logically begins with the subject group (people with genetic predisposition and high BMI), continues with the health outcome (lower risk), then compares them with another group (those affected by environmental/lifestyle factors). This flow is preserved only in Option 3: (B), (A), (D), (C).
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