To rearrange the parts into a meaningful and coherent sentence, we need to understand the context and logical flow of the sentence. Let's analyze each fragment:
The sentence should logically begin with the part that introduces the subject of the sentence. In this case, R: "a nourished population" serves as the subject.
Next, we find that a "nourished population" (R) should be described with adjectives that give context to its importance. The sequence S: "resilient and" is an appropriate continuation because it describes the characteristic of the population.
The fragment P: "is the bedrock of a" follows naturally because it indicates the foundational role that "a nourished population" plays.
Finally, the sentence logically concludes with Q: "equitable society" since it completes the thought of what the nourished population supports as its bedrock.
Thus, the correct order of the sentence is: RPSQ.
Therefore, the rearranged sentence is: "A nourished population is the bedrock of a resilient and equitable society."
Hence, the correct answer is RPSQ.