Answer:
A busy market place is full of people and is always bustling with activity. There are the different sellers who are part of the crowd and they are trying to entice the buyers to buy their products.
The sound device that is most evident in line 2 is Alliteration
I'm not exactly sure, but to use common sense, I'd say eye-contact. You explicitly said, "nonverbal," and eye-contact is the most reasonable one.
There were a couple of childern at the large barnyard, four to be exact. Outside was a round marsh. The parent went out in the beautiful weather put some charcoal in the grill. Only the parent was able to put it in for the childerns safety. He put some steaks on the grill, when it finished the family sat down and ate it all. The baby sitter came and the parent went out get he's postcard and he was sharp since it was so late. When he got it, he drove back home and slept happly.
Hope this helps your daughter! :D