The correct answer is accumulation.
The way a glacier moves determines on the relationship which is between the accumulation and wastage.
Glacier is termed as a persistent body dense ice which is constantly moving under its own weight.
It is formed where accumulation of snow exceeds its ablation or sublimation and melting.
Glacier flow and deform because of stressed and also distinguish features.
99% of glacier on earth is contained in the vast ice sheets in polar regions. Glacier can be found on mountain ranges.