The correct answer is option 'C' - School.

Explanation:
- When the caravan of families moves, the children do not go to school for six months.
- The question is asking about the activity that the children do not engage in during the caravan journey.
- The caravan refers to a group of families or travelers who move together for safety, support, or cultural reasons.
- During this journey, the families typically travel long distances, often through difficult terrain or unfamiliar areas.
- As a result, the children are unable to attend school regularly during this time.
- It is important to note that the question specifically mentions that the children do not go to school for six months, suggesting that the caravan journey is a prolonged one.

Reasons for not going to school:
1. Lack of access to schools: During the caravan journey, families may not have easy access to schools due to their nomadic lifestyle or remote locations.
2. Disruption in education: The constant movement of the caravan makes it challenging for children to attend school regularly, resulting in a disruption in their education.
3. Safety concerns: Caravan journeys may involve risks and uncertainties, making it unsafe or impractical for children to attend school.
4. Limited resources: The families in the caravan may have limited resources, including educational facilities and materials, making it difficult for children to continue their education.

Importance of education:
- Education is essential for the overall development and future prospects of children.
- It provides them with knowledge, skills, and opportunities for personal growth.
- Education also plays a crucial role in breaking the cycle of poverty and empowering individuals to lead better lives.

In conclusion, when the caravan of families moves, the children do not go to school for six months. This is due to various reasons such as lack of access to schools, disruption in education, safety concerns, and limited resources. However, it is important to ensure that children receive education and opportunities for learning, even during challenging circumstances like a caravan journey.