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Kichungi wanted to filter some muddy water. She poured it into a filter which was arranged as shown in the diagram below.
![figsoil27620201121.JPG](/courses/uploads/figsoil27620201121.JPG)
The main purpose of the charcoal in this filter was to
A. Remove any floating leaves.
B. Absorb dust particles
C. Remove germs
D. Absorb colour.