Final answer:
Cally's frustration due to others outperforming her in gymnastics is an issue related to Unrealistic and competitive goal-setting, which is not supported by strategies that foster high self-efficacy and motivation.
Step-by-step explanation:
Cally's problem as described in the question is B) Unrealistic and competitive goal-setting. Setting a goal to be better at gymnastics than anyone else in the class is not very achievable and appropriate because it relies on the performance of others, which is not within one's control. Additionally, such a goal is not inherently motivational as it may lead to feelings of frustration when others perform better despite one's best efforts. It would be more beneficial for Cally to set personal improvement goals that are realistic and focused on her own development, rather than on outperforming her classmates.
Self-efficacy plays a crucial role in motivation and behavior. Individuals with high self-efficacy are likely to set challenging yet achievable goals, stay committed to activities, and recover quickly from setbacks. Therefore, it's important for Cally to focus on increasing her confidence in her gymnastics abilities to foster resilience and a positive view of challenges.