I think how people affect the natural world and how if affects them.
The committees investigate and prepare legislation to be considered by the House. The committee is basically a sub-organization within the legislative branch, what it does is identify the issues for legislative review and recommend a course of action to the parent body after gathering information about the subject.
The Indian Reorganization Act of 1934 accomplished that the Indians were granted back their assets which had been historically removed from them. These assets included land and minerals, but the larger idea behind it was for Native Americans to be re-assimilated into society and for economic self-sufficiency to be more readily available for the community, as well as a certain amount of sovereignty for the different tribes.
The answer can not be C or B, which means the answer can only be A)