Electric charge between two bodies can be produced by

Options

A. sticking
B. rubbing
C. oiling
D. passing AC current

Explanation

### Step-by-Step Solution:

1. **Understanding Electric Charge**: Electric charge is a fundamental property of matter that causes it to experience a force when placed in an electromagnetic field. Charges can be positive or negative.

2. **Methods of Producing Electric Charge**: There are several methods through which electric charge can be generated between two bodies. The question lists four options: Sticking, Rubbing, Oiling, and Passing AC Current.

3. **Rubbing as a Method**: Among the options provided, rubbing is a well-known method to produce electric charge. When two different materials are rubbed against each other, electrons may be transferred from one material to the other.

4. **Work Function Concept**: The work function is the minimum energy needed to remove an electron from the surface of a material. When two materials with different work functions are rubbed together, the material with the lower work function loses electrons and becomes positively charged, while the other material gains those electrons and becomes negatively charged.

5. **Example of Rubbing**: A classic example is rubbing glass with silk. In this case, glass has a higher work function compared to silk. When rubbed, the glass loses electrons to the silk, resulting in the glass becoming positively charged and the silk becoming negatively charged.

6. **Conclusion**: Therefore, the correct answer to the question is that electric charge between two bodies can be produced by rubbing them together.