Which statement about degrees of relation by blood is true?

• A. The second degree includes brothers and sisters.
• B. The first degree includes grandparents.
• C. The third degree includes only nieces and nephews.
• D. Adopted children are never considered related by blood.

Answer: (A)

Degrees of blood relation are counted by the number of generations between people. First degree covers direct parent-child ties; siblings are two steps apart through a common parent, so they fall into the second degree. That makes the statement about brothers and sisters being in the second degree true. Grandparents and grandchildren are also second degree, not first. The third degree includes both uncles/aunts and nieces/nephews, not only nieces and nephews. And while adopted children aren’t related by blood to their adoptive parents, they can still be blood-related to their birth parents, so saying they are never related by blood isn’t accurate.