Answer:
The revision which is the best example of adding concrete detail is:
Claire Innes was separated from the people around her during the fire and she later found them near the same place they were separated.
The other options do not apply because the original sentence does not talk about Claire Innes' parents or family
Claire Innes became separated from her parents as the flames spread through the city, and she later found them.
In the panic, Claire Innes was separated from her family as they fled, and she was reunited with her father after the fire was extinguished.
In the panic, Claire Innes became separated from her brothers and sisters during the fire and she later found them after the fire was put out.
Explanation: