What is an obligation that relates to attending school?

Attending school is an obligation that is often mandated by laws in many countries, making education a requirement for children within a certain age range. This legal requirement is intended to ensure that all children have access to education and the opportunities it provides. Laws requiring school attendance are in place to promote literacy, social development, and preparation for future responsibilities in society.

The other options denote varying degrees of commitment: being strictly voluntary implies no obligation at all, being encouraged strongly indicates a suggestion rather than a requirement, and being optional based on circumstances suggests that attendance can be skipped depending on personal situations. However, the foundational aspect of education as a societal requirement makes the notion of it being required by law the clear and accurate choice.