Indicate the temperature at which carbon can be used as a reducing agent for `FeO`.

Explanation

To determine the temperature at which carbon can be used as a reducing agent for FeO (iron(II) oxide), we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Reaction**:
- The reduction of iron(II) oxide (FeO) by carbon can be represented by the following chemical equation:
\[
\text{FeO} + \text{C} \rightarrow \text{Fe} + \text{CO}
...