This question would be a geometry question. As you can see from the picture attached below, the path taken by the runner forms a right triangle. The 3 miles West would equal the base of the triangle while the 8 miles North will be the side. This means that the hypotenuse (marked by x) is the straight path home that we need to find the value for. We can do this by using the Pythagorean Theorem, which is the following formula

In this formula, the variables a and b are the sides of the triangle, while c is the hypotenuse. Now we can apply the values of the triangle below and solve for c.

9 + 64 = 
73 =
... apply square root on both sides
8.54 = x
Finally, we can see that the run straight back home would be 8.54 miles.
The Brahmaputra River has its source in the Himalayan mountains. It flows through Southern tibet in deep gorges. the Tibetan people are not able to live right next to the river banks because the sides of the gorge are too steep for human habitation.
Hope this help :))
What is the question you were trying to ask
A. Nuclear Non-Proliferation Treaty, is the correct answer.
NATO was an intergovernmental military alliance where the members agreed to defend one another in the case of an attack. The Universal Declaration of Human Rights was a 1948 declaration about what the rights human beings are entitled to. The Kyoto Protocol was a 1993 international treaty to reduce the emissions of greenhouse gases. None of these concern the disarmament and destruction of nuclear weapons.
The Nuclear Non-Proliferation Treaty was an international agreement to prevent the spread of nuclear weapons and promote the peaceful use of nuclear energy. This is the correct answer.