Paragraph 28 contribute to the development of the plot by option B It highlights that Elena feels upset about spoiling Marcos's surprise.
Paragraph 28 serves as a crucial turning point in the story, highlighting Elena's inner turmoil and foreshadowing the impending climax. The author's astute observation of Elena's subdued behavior, "picking at her food and being quiet while everyone else is talking," signifies a depth of emotional distress that has been brewing beneath the surface.
Elena's actions are not mere indicators of discomfort; they are manifestations of her guilt and remorse for inadvertently revealing Marcos's surprise to their family.
So, This breach of trust has shattered the anticipation and excitement that had been building up within the family, and Elena's silence encapsulates her internal struggle to confront the consequences of her actions.