The word "inscrutable" is defined as something that is difficult to understand or interpret. It implies that something is not easily comprehensible or is obscure in nature. Let's analyze the given options to find the one closest in meaning:
Therefore, the word closest in meaning to "inscrutable" is Mysterious.


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