The answer is C. It is a nervousness issue portrayed by unreasonable, wild and regularly silly stress, that is, worried assumption about occasions or exercises. This intemperate stress regularly meddles with day by day working, as people with GAD normally suspect fiasco, and are excessively worried about ordinary issues, for example, medical problems, cash, demise, family issues, kinship issues, relational relationship issues, or work challenges.
The correct answer is "students' ability to master whatever they seek to learn". This is the only option that states a truly motivating experience, since the ability to master whatever someone wants is believing in yourself which ultimately leads to motivation. Multiple studies have proved that students positive thoughts lead to better grades through motivation.
Answer: D or C both works