means an individual’s dependent or any other person who is a first-degree, second-degree, third-degree, or fourth-degree relative of the individual or the individual’s dependent. Relatives by marriage or adoption are treated the same as relatives who share a common biological ancestor. First-degree relatives include parents, spouses, siblings and children. Second-degree relatives include grandparents, grandchildren, aunts, uncles, nephews, and nieces. Third-degree relatives include great-grandparents, great-grandchildren, great aunts, great uncles, and first cousins. Fourth-degree relatives include great-great grandparents, great-great grandchildren, and children of first cousins.