The bread or idli dough rises because of ______.

Options

A. heat
B. grindng
C. growth of yeast cells.
D. kneading

Answer

**Step-by-Step Solution:**

1. **Identify the Ingredients**: When making bread or idli, we typically use flour, water, and yeast as the main ingredients.

2. **Role of Yeast**: Yeast is a type of microorganism that plays a crucial role in the fermentation process. It is responsible for the rising of the dough.

3. **Fermentation Process**: When yeast is added to the dough, it begins to consume the sugars present in the flour. This process is known as fermentation.

4. **Production of Carbon Dioxide (CO2)**: During fermentation, yeast converts the sugars into alcohol and carbon dioxide gas. The production of CO2 is what causes the dough to rise.

5. **Effect on Dough**: As the CO2 gas is produced, it gets trapped in the dough, creating bubbles. This leads to the dough expanding and rising, resulting in a fluffy texture in the final product.

6. **Conclusion**: Therefore, the bread or idli dough rises because of the growth of yeast cells and the subsequent fermentation of sugars, which produces carbon dioxide.

**Final Answer**: The bread or idli dough rises because of the growth of yeast cells.

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