The fusion reaction in the sun is a multi-sept process in which the

Options

A. helium is burned into deuterons
B. helium is burned into hydrogen
C. deuteron is burned into hydrogen
D. hydrogen is burned into helium

Explanation

To solve the question regarding the fusion reaction in the sun, we need to understand the process of nuclear fusion that occurs in stellar environments. Here’s a step-by-step breakdown of the solution:

### Step 1: Understand Fusion Reactions
Fusion is a process where two light atomic nuclei combine to form a heavier nucleus, releasing energy in the process. In stars like the sun, this primarily involves hydrogen nuclei (protons) fusing to form helium.

**Hint:** Remember that fusion combines lighter elements to form heavier ones, releasing energy.

### Step 2: Identify the Main Reaction in the Sun
The primary fusion reaction in the sun is the conversion of hydrogen into helium. This process occurs through several steps, often referred to as the proton-proton chain reaction.

**Hint:** Focus on the fact that hydrogen is the primary fuel for fusion in the sun.

### Step 3: Analyze the Given Options
The options provided are:
1. Helium is burnt into deuteron
2. Helium is burnt into hydrogen
3. Deuteron is burnt into hydrogen
4. Hydrogen is burnt into helium

From these options, we need to identify which one accurately describes the fusion process occurring in the sun.

**Hint:** Look for the option that indicates the conversion of hydrogen into a heavier element.

### Step 4: Select the Correct Option
The correct option is:
- **Hydrogen is burnt into helium.**

This reflects the process where multiple hydrogen nuclei (protons) fuse together through a series of reactions to ultimately form helium nuclei, releasing energy in the form of light and heat.

**Hint:** The term "burnt" in this context refers to the fusion process, not combustion.

### Step 5: Conclusion
Thus, the answer to the question about the fusion reaction in the sun is that hydrogen is converted into helium.

**Final Answer:** Hydrogen is burnt into helium.