Your next screen will offer you method choices:

If you see this screen with Google Analytics as the recommended method, STOP AND FOLLOW THE DIRECTIONS AT THE BOTTOM OF THIS PAGE.

If not, follow the directions of the next couple of screenshots.You may see the following screen where the recommended method is utilizing HTML file upload.
The Google Analytics method is under "Alternative methods".

Check the box: I'm not a robot.
Click on: Alternative method

Next Choose: Google Analytics

The next screen looks like this:

Whether Google Analytics was the recommended or alternative method, the key is to choose it and use it. You will now leave this tab open and come back to it later. DO NOT VERIFY AT THIS TIME.

Next: You'll open another new tab and create a free Google Analytics account.