Concept:Stagnation in education refers to a student remaining in the same class for more than one academic year due to failure or insufficient progress.
Explanation:When a child does not move to the next grade within the normal one‑year period, it is called stagnation.
This often happens because of low exam scores or poor attendance.
In the past, students who failed to get minimum marks in class tests were held back.
Today, promotion is mainly based on minimum attendance requirements.
Stagnation is a major problem, especially in tribal education, and is linked to wastage and absenteeism.
Thus, the correct meaning is when a child is retained in the same class for more than one year.
Answer:Option A: Retention of a child in a same class for more than one year