Which of the following trophies is awarded for overall performance in NHL season scoring?

The Art Ross Trophy is awarded to the player who leads the NHL in scoring points at the end of the regular season. This includes both goals and assists, making it a clear indicator of a player's offensive contribution throughout the entire season.

The trophy was established in 1947 and named after Art Ross, a former NHL player and coach, as well as a long-time executive in the league. Winning this trophy signifies that the player has been the most productive offensively over the course of the season, showcasing their ability to score and assist their teammates effectively.

In contrast, the Hart Memorial Trophy is awarded to the player deemed "most valuable" to their team, the Lester B. Pearson Award recognizes the most outstanding player as voted by the NHLPA, and the Vezina Trophy is awarded to the best goaltender. Each of these awards focuses on different aspects of performance rather than overall scoring. The distinction that the Art Ross Trophy specifically targets scoring output makes it the appropriate answer for the question regarding overall performance in NHL season scoring.