The correct answer is- 'QSPR.' Key Points - While arranging the parts of the passage given in the options, we have to find some grammatical or contextual connections between them, so let's find out. - The opener will be Q as it introduces the context of the paragraph. - S follows Q because it's adding some more information. - R is providing a conclusion to the context. - Correct sentence: Ever since the COVID-19 pandemic began, calibrating disease-related risk has become a fixture of everyday life.