Option 1 (Concise):
* The team won the championship because they played hard.
This option uses the conjunction "because" to clearly show the cause-and-effect relationship between the team's effort and their victory.
Option 2 (Emphasis on hard work):
* The team's hard work earned them the championship.
This option emphasizes the team's effort and how it led to the victory.
Option 3 (More descriptive):
* The team fought valiantly throughout the season, and their hard work culminated in a championship victory.
This option adds more detail and creates a more vivid image of the team's journey to victory.
Option 4 (Using a participial phrase):
* Playing hard, the team won the championship.
This option uses a participial phrase to show the team's effort while also being concise.
The best option for revising the sentence depends on the context and the desired emphasis.