Read the Paragraph Below and Then Answer the Questions That

Read the paragraph below and then answer the questions that follow by choosing the letter of the correct response.
In most states, before you can even think about voting, you have to register to vote. You can register in person by going to your local board of elections office, state department of motor vehicles, or other office or agency (such as the post office) designated as an official voter registration location in your state. However, one of the fastest and easiest ways to register is to go to the website RegistertoVote.org and complete three easy steps. First, you click on your state of residence. You will be taken to a page that lists your state's voter eligibility requirements and identifies registration deadlines. Next, you fill out the online voter registration form and click the "Get Registration Form" button. Finally, you download your completed form and follow the instructions to sign it and submit it to the appropriate state or local office for processing. Within a few weeks, you will receive confirmation of your registration.
The subject of this paragraph is

A) voting.
B) registering to vote.
C) reasons why voting is important.