Final answer:
Occurrences such as a fight with your significant other or winning concert tickets are best characterized as (a) life experiences. They can act as stressors or meliors, influencing one's well-being and personal growth.
Step-by-step explanation:
The term that best characterizes occurrences such as a fight with your significant other or winning tickets to a concert is life experiences. These events are part of everyday life and can either be stressors, which are experiences that cause anxiety and distress, or they can be meliors, which are experiences that give rise to a sense of enjoyment.
A fight with a significant other can be seen as a stressor as it may cause emotional distress, whereas winning concert tickets typically creates excitement and enjoyment, thus acting as a melior. Both stressors and meliors contribute to the quality of life and well-being, and they can lead to personal growth or, if excessive, to health issues.