In Brazil, 90% of cars are running on

Options

A. Pure alcohol
B. Pure gasoline
C. Mixture of alcohol and gasoline
D. Diesel

Answer

**Step-by-Step Solution:**

1. **Identify the Context**: The question asks about the fuel used by cars in Brazil, specifically noting that 90% of cars are running on a particular type of fuel.

2. **Consider the Options**: The options provided are:
- Pure alcohol
- Pure gasoline
- Mixture of alcohol and gasoline
- Diesel

3. **Research Brazil's Fuel Usage**: Brazil is known for its significant production of ethanol, which is primarily derived from sugarcane. Ethanol is often blended with gasoline to create a fuel that is more environmentally friendly.

4. **Determine the Correct Answer**: Given that Brazil is the largest producer of ethanol fuel and that a significant portion of its cars run on a blend of ethanol and gasoline, the correct answer is the "mixture of alcohol and gasoline."

5. **Conclude**: Therefore, in Brazil, 90% of cars are running on a mixture of alcohol and gasoline.

**Final Answer**: Mixture of alcohol and gasoline.

---