The correct answer is option 'C', ideas. In an interactive classroom setting, the primary goal is to promote learning and encourage students to actively participate in the learning process. Generating ideas is a key aspect of this interaction as it allows students to share their thoughts, perspectives, and insights on various topics and concepts being discussed in the classroom.

1. Importance of Interaction:
Interaction inside the classroom is essential as it promotes active engagement and participation among students. It creates a dynamic learning environment where students can exchange ideas, ask questions, and collaborate with their peers. This not only enhances their understanding of the subject matter but also fosters critical thinking and problem-solving skills.

2. Ideas Generation:
One of the key outcomes of interaction in the classroom is the generation of ideas. Through discussions, debates, and group activities, students are able to explore different perspectives, challenge existing ideas, and come up with new and innovative solutions to problems. This process of idea generation promotes creativity and encourages students to think outside the box.

3. Collaborative Learning:
Interaction inside the classroom also facilitates collaborative learning. When students interact with their peers, they can share their knowledge, skills, and experiences. This collaborative approach allows for the exchange of ideas and promotes a deeper understanding of the subject matter. By working together, students can build upon each other's ideas, collectively solve problems, and develop a more comprehensive understanding of the topic being discussed.

4. Enhanced Communication Skills:
Interaction in the classroom also helps in developing effective communication skills. When students engage in discussions and debates, they learn how to express their thoughts and ideas articulately. They also learn to listen actively to others, consider alternative viewpoints, and respond appropriately. These communication skills are crucial not only for academic success but also for their personal and professional development.

5. Critical Thinking and Problem-Solving:
Another important benefit of interaction in the classroom is the development of critical thinking and problem-solving skills. When students are actively involved in discussions and debates, they are encouraged to analyze information, evaluate different perspectives, and make logical connections. This process stimulates their critical thinking abilities and enables them to approach problems from multiple angles, leading to more effective problem-solving.

In conclusion, interaction inside the classroom should generate ideas as it promotes active engagement, collaborative learning, enhances communication skills, and fosters critical thinking and problem-solving abilities among students.