The end product of oxidative phosphorylation is

Options

A. NADH
B. oxygen
C. ADP
D. `ATP+H_(2)O`

Explanation

**Step-by-Step Solution:**

1. **Understanding Oxidative Phosphorylation**:
- Oxidative phosphorylation is a process that occurs in the mitochondria of cells during cellular respiration. It involves the complete oxidation of glucose and is responsible for producing ATP.

2. **Identifying the Process**:
- The process uses energy released from the oxidation of reduced coenzymes (like NADH and FADH2) to drive the synthesis of ATP from ADP and inorganic phosphate.

3. **End Products of Oxidative Phosphorylation**:
- The main end products of oxidative phosphorylation are:
- ATP (adenosine triphosphate)
- Water (H2O)
- Carbon dioxide (CO2)

4. **Analyzing the Options**:
- Given options are:
- NADH
- Oxygen
- ADP
- ATP plus water
- Among these, NADH is a reactant, oxygen is used in the process but is not an end product, and ADP is a substrate that gets converted into ATP.

5. **Selecting the Correct Answer**:
- The most appropriate answer from the options provided is "ATP plus water" since both ATP and water are indeed end products of oxidative phosphorylation.

**Final Answer**: The end product of oxidative phosphorylation is ATP plus water.

---