Answer:
The detail, "And someone gave little Davy Hutchinson a few pebbles", contributes to the text because his mother was the one being stoned, but the person who gave him some pebbles was suggesting that he needed to start participating at a young age, just as everyone else did.
Answer:
I think it would be all of the above, if you could provide a passage with the question it would be helpful. But I'm not 100% sure if it would be all of the above.
Answer:
imagery, stanzas, symbolism, tiles, theme ,structure, repeat, sound