Childrean are used as labour because the owners may feel that the work can be done soon by them at a low cost.children won't dare to argue for money towards the owners,this may profit the owners. if the owners keep adults in place of the children he may ask for more money.this makes him loss.may be thats why

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1. Child labor is available at a low cost as most of the parents of poor households force their children to do work ..
2. Children don't argue with the contractors for more money so this benefits the contractors .
3. The calorie consumption of children is much less than that of adults so the require less food .
4. It is very easily available from contractors .
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Hope it helped . Plz mark it as brainliest answer ..
nice one dude
thx . plz mark it as brainliest ..
i cant dude