Question

Read the following passage:

For two decades, Jonathan had blown glass for the meteorological institute, his pride resting on the absolute uniformity of his barometric tubes. To him, a bubble in the cylinder was a moral failing, a sign of unsteady breath or contaminated silica; he treated glass as a medium of pure confinement, forcing chaotic heat into predictable gauges. His apprentice, Timothy, however, spent his evenings shaping erratic, lumpy glass weights, trapping colorful swirls and air pockets inside them—creations Jonathan routinely dismissed as undisciplined play. Yet, when tasked with repairing the parish house's stained-glass window—a centuries-old collage warped by gravity and riddled with trapped air—Jonathan found himself pausing before an amber pane. Running his calloused thumb over the uneven surface, he saw how the trapped bubbles refracted the morning light in a warm, dancing glow that his own pristine, clinical tubes could never produce. Looking back at Timothy’s workbench, the lumpy weights no longer appeared as failures of technique, but as vessels of light. Jonathan slowly laid down his calipers, feeling the sudden chill of his own long-held exactitude.

Which of the following best describes how the contrast between Jonathan’s barometric tubes and Timothy’s erratic glass weights functions to reveal Jonathan’s shifting values?