The correct answer is "D)":
In order to set yourself a goal. You must make sure it is achievable and can be met in the timeframe you have. Once you have this clear, you can then proceed to subdivide your goal into smaller tasks that have to be completed in order to achieve the main goal.
In this example, Gary is pretending to improve his passing capacity from 40 to 350 yards per game (almost 9 times more), besides avoiding all interceptions and, above all, performing like the star of every game. Although highly demanding, these are all achievable goals because they are quantifiable and eventually could be achieved during the season.