Groups that say it is better to employ children in poor countries where they are the family breadwinners than to refuse to employ them and force their families deeper into poverty, are using the to determine ethical behavior.

The correct answer to the blank space is “need or necessity” which is a completely unacceptable argument to force children to work, from an ethical or any point of view, though, customs and habits prevail in many developing countries where it is allowed. Some authors explain that “early childhood services are seen as necessary conditions both for competing economically in an increasingly globalized and marketized capitalism and for ameliorating its associated social disorders” (Dahlberg & Moss, 2005 cited by Moss, P. (2006).  

The reality is that these arguments have already been dismissed, as many breadwinners use children to maintain themselves out of the responsibility of raising those children in their best interest. Regarding this matter, many authors such as Anthony Giddens had argued mainly regarding the motivation of the poor ones to remain poor and the obstacles they face to supersede their situation of poverty, acknowledging that probably due to governing privileges they instead prefer to stay in their peccary situation to maintain those benefits. Otherwise, these benefits would not be granted, for sure a matter of more in-depth discussion.

In 2013 UNICEF Child’s Protection Director Susan Bissell stated that "When children are forced into the most dangerous forms of work when they miss school when they are in danger, and their health and well-being deteriorate, it is unacceptable. It is necessary to act to face this situation and, first of all, place, prevent it from happening"  

According to UNICEF around  150 million children between 5 and 14 years old work to collaborate or support their families. It is estimated by this organization that  7.4 million children in the same age group are engaged in domestic work, and mainly by girls.

References

Moss, P. (2006). Structures, understandings, and discourses: Possibilities for re-envisioning the early childhood worker. Contemporary issues in early childhood, 7(1), 30-41.

Giddens, A. (1987). Las nuevas reglas del método sociológico. Buenos Aires: Amorrortu.

well, there are a lot of places we get information about earth from. like science classes, websites, books, newspapers, etc.