For obvious ethical reasons, the study of children who develop without the benefit of parents is limited. A better source of data concerning the effects on children of not having parents comes from .

children raised in orphanage

Explanation:

The options include:

1. ) “feral” children

2) mentally ill children

3) abandoned children

4) children raised in orphanage.

Based on the options given above, a better source of data concerning the effects on children of not having parents comes from the children that are raised in orphanage.

Since the study is about children who develop without the benefit of parents and the sample available is limited, getting data from the children that are raised in orphanage will be a better source of data as they are people who doesn't have their parents with them during their development.

c. wright mills's sociological imagination suggest investigating to explain this increase?