Crude petroleum is also called

Options

A. black gold
B. yellow gold
C. brown gold
D. white gold.

Explanation

**Step-by-Step Solution:**

1. **Understanding Crude Petroleum**: Crude petroleum is a natural resource that is formed from the remains of ancient marine organisms that have been subjected to heat and pressure over millions of years.

2. **Extraction Process**: It is extracted from deep within the Earth’s crust through drilling processes.

3. **Physical Characteristics**: Crude petroleum is typically a dark yellow liquid, which is important for its identification.

4. **Common Names**: Crude petroleum is commonly referred to as "crude oil."

5. **Commercial Importance**: Due to its high commercial value, it is often referred to as "black gold."

**Final Answer**: Crude petroleum is also called crude oil.

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