Which of the following is an internal factor influencing adolescent academic achievement?

• A. Classroom size
• B. Motivation
• C. Parental expectations
• D. School funding

Answer: (B)

Motivation is an internal factor because it comes from the student’s own drive, interests, and goals. When a adolescent is motivated, they engage more with the material, persist through challenges, plan and regulate their study time, and use effective learning strategies. These internal choices and efforts directly influence how much they learn and how well they perform academically.

In contrast, classroom size, parental expectations, and school funding shape the environment and resources available to the student, but they originate outside the learner. Classroom size affects teacher attention and opportunities to receive help; parental expectations are external pressures or beliefs from family; school funding determines what resources and programs exist. So, motivation stands out as the internal factor that most directly drives the effort and persistence linked to academic achievement.