Name the chamber of a ruminant stomach in which cellulose is digested.

Explanation

### Step-by-Step Solution:

1. **Understanding Ruminant Stomach Structure**: Ruminants have a specialized stomach that is divided into four chambers: the rumen, reticulum, omasum, and abomasum.

2. **Identifying the Function of Each Chamber**: Each chamber has a specific role in the digestion process. The rumen is primarily responsible for the fermentation of food, particularly fibrous plant materials.

3. **Recognizing the Role of Cellulose**: Cellulose is a complex carbohydrate found in plant cell walls, and it is a major component of the diet for ruminants, such as cattle.

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