Final answer:
The provided text excerpts do not offer information about how people are grouped at nightfall in 'A Long Walk to Water'. They describe different scenarios and contexts unrelated to the grouping in 'A Long Walk to Water'.
Step-by-step explanation:
In A Long Walk to Water by Linda Sue Park, the people are not explicitly grouped at nightfall in the provided text excerpts. Instead, there are a variety of scenarios described in different contexts, none of which directly relate to the groupings at nightfall in A Long Walk to Water. For instance, there are passages that describe individuals wandering alone, a student observing groups during reconnaissance with a camera, and a narrative of an exodus led by a child during wartime. Each of these excerpts from various texts highlights different ways groups or individuals might move or gather in different situations, such as seeking water, fleeing, or merely existing in a designated space. However, these descriptions do not pertain to the novel in question and how people are grouped at nightfall within its narrative.