Final answer:
In 'A Charlie Brown Christmas', characters are seen ice skating in the opening scene, a classic winter activity that highlights the seasonal joy.
Step-by-step explanation:
In the opening scene of A Charlie Brown Christmas, the characters engage in a well-known winter activity: ice skating. The scene sets the festive tone of the holiday season, capturing the joy and playfulness typically associated with this time of year. The characters are seen gliding across a frozen pond, which is a classic representation of enjoying the winter season and its activities.