According to subpart d, research with children may be eligible for exemption under category 2 when: the research with children will involve participant observation with researcher interaction. the children will be asked to complete a survey the children will be interviewed by the researcher. the research involves the use of educational tests

The research involves the use of educational tests

Explanation:

The sub part D is a part of regulations that created by the government in order to protect children from research's related activities.

For most researchers, only consenting adults are allowed as a part of test subjects. But, according to sub part D, children can be used if the research involves educational tests because it have very low risk, and it might benefit the children in the long run.

forty niners migrated west due to gold discovery in california and it the west was a new place for hope this : )

explanation:

answer; fair labor and standard act;