When it comes to nutritional care during illness, it is crucial to follow a structured approach to ensure the individual's health needs are effectively met. The correct sequence of steps is as follows:
The steps of nutritional care during illness should be followed in this order:
Thus, the correct sequence is (A), (B), (C), (D).
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