Final answer:
If Brugo's painting showed concern instead of indifference, Howard Aden would write lines that reflect sadness and worry, as artists convey emotions corresponding to the mood they aim to create.
Step-by-step explanation:
Howard Aden would most likely write lines that reflect sadness and worry if Brugo's painting had depicted concern rather than indifferent characters. In literature and art, the emotions of characters are profoundly tied to the mood conveyed through the work. Artistic representation aims to invoke sympathy or resonance in its audience by mirroring the emotions of the subjects.
Artists and poets often channel their own emotions into their work to convey a certain atmosphere or mood. For example, as suggested in the extracts you've provided, Mariana's surroundings in Tennyson's poem enhance the feeling of dejection; similarly, a painting or a poem would likely portray expressions of concern if the subject matter was characterized by worry or urgency.