Answer:
online hour time to me with a picture of your
B. Harmed because they brought deadly diseases
Both a and c are correct, however I think that A would be the most correct answer in this case.
One reason factory owners employed children because they were significantly cheaper than hiring an adult. "the child is paired one shilling or one shilling and six pence". This shows that it's more cost efficient to hire a child.
Another reason factory owners employed children because of their size. Here is a quote to support this "The smallest child in the factories were scavengers they go under the machine". This shows that if the child is smaller they can do more dangerous jobs than an adult.
