The correct answer to this open question is the following.
Although the question does not have any statements or options, we can say that the Supreme Court's rationale for the decision in McDonald v Chicago was that the Court reversed the decision made by the 7th. Circuit, explaining that the 14th Amendment to the US Constitution supports the right including in the 2nd Amendment to have weapons for the self-protection of the citizen in all the states of the Union. So yes, the 2nd. Amendment to the United States Constitution applies to the states. The case McDonald v Chicago was decided on June 18, 2010.
