Answer:
The sentences that add descriptive details in examples 1 and 2 are the following:
1) Aluminum cans littered the shore, and floating debris cluttered the shallow water.
2) The car slowed to a snail’s pace, and the line of cars ahead stretched out of sight, with exhaust fumes looming overhead.
Descriptive details are the ones that add a descrption of the context, usually through the use of descriptive adjectives that modify a noun. Examples are: aluminum cans, floating debris, shallow water, snail´s pace, and exhaust fumes
Characterization in passage 3 is revealed through the narrative of the actions that describe the character´s feelings and emotions (shook it side by side, leaned back on the door)
3) The characterization reveals Maggie’s regret.
