**External Factors Affecting Student Interest in the Classroom**

External factors play a crucial role in shaping the interest of students in the classroom. These factors can significantly impact their motivation, engagement, and overall academic performance. Among the given options, culture and training are the external factors that have a direct influence on student interest. Let's explore this further:

**Culture**
Culture refers to the beliefs, values, norms, and practices shared by a particular group of people. It has a profound impact on students' attitudes, behavior, and learning preferences. Here's how culture affects student interest in the classroom:

1. **Language**: Students from different cultures may have varying levels of proficiency in the language of instruction. This language barrier can hinder their understanding and engagement in the classroom.

2. **Learning Styles**: Different cultures have different approaches to learning. Some cultures prioritize collaborative learning, while others emphasize individual learning. When teaching methods align with students' cultural learning styles, it can enhance their interest and participation.

3. **Perceptions of Education**: Cultural beliefs about the importance and purpose of education can impact students' motivation and interest. For example, in some cultures, academic success is highly valued and seen as a pathway to social mobility, while in others, vocational training may be prioritized.

**Training**
Training refers to the educational experiences, skills, and knowledge that students acquire outside the classroom. It can have a significant influence on their interest in the classroom. Here's how training affects student interest:

1. **Relevant Experiences**: Students who have had prior experiences or training related to a particular subject are more likely to be interested and engaged in that subject. For example, a student who has participated in robotics workshops may be more interested in science and technology classes.

2. **Real-World Applications**: When students can see the practical applications of what they are learning, it enhances their interest and motivation. Training programs that provide hands-on experiences and connect classroom learning to real-world situations can significantly impact student engagement.

3. **Role Models and Mentors**: Positive role models and mentors who have expertise in a particular field can inspire students and ignite their interest. Training programs that provide access to mentors or professionals from various industries can broaden students' perspectives and spark their curiosity.

In conclusion, while all the given options can indirectly influence student interest, culture and training are the external factors that have a direct and significant impact on their engagement and motivation in the classroom.