Answer:
reflect the sad reality and condition of those children who worked at factories and mills whole night.
Explanation:
In her speech, Florence Kelly mentioned the phrase 'little beasts of burden' to reflect the sad reality and condition of those children who worked at factories and mills whole night.
Through this phrase, she wanted to remind the readers that these young children were treated as beasts of burden who spun, wove, knitted, stumped, and worked without any rest.
Thus, she calls the audience to take actions against such great evil that robs the children from their childhood and school.
