How Do You Prioritize Optimization Of A Mobile Site For Browser Versions Or Screen Resolutions:

Look for the highest number of sessions and lowest conversion rates (or highest bounce rates)
Look for the oldest version of your site
Optimize all at the same time
Prioritize the site with the highest conversion rates

The correct answer is:

Look for the highest number of sessions and lowest conversion rates (or highest bounce rates)

Sources: Google Mobile Sites Certification Course

To see all the questions and correct answers of the Google Mobile Sites Certification Exam, Click Here – Google Mobile Sites Certification Answers.