1. The nation extends. (a) from one ocean
to another ocean.
(b) greetings to the people of Japan.
(c) to be the site of the next summer Olympic Games.
(d) millions of people from all over the world.​

a

Explanation:

the others don't make sense

the statement that best explains why the tenth amendment reserves some rights and powers to states is that the framers believed in the principle of federalism. this principle says that some powers are in the hands of a centralized national government, while others are reserved for the governments of several states.

it is the background information on the characters and setting explained at the beginning of the story. the exposition will often have information about events that happened before the story began. the exposition is often the very first part of the plot.