______between the surfaces of the paper and the nib of a pen or the tip of a pencil enables us to write on the paper

Options

A. Friction
B. Force
C. Cohesion
D. Mass

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the phenomenon that occurs between the surfaces of the paper and the nib of a pen or the tip of a pencil that allows us to write on the paper.

2. **Identifying the Key Concept**: The key concept here is the interaction between two surfaces - the paper and the writing instrument (pen or pencil).

3. **Exploring the Interaction**: When the nib of the pen or the tip of the pencil comes in contact with the paper, there is a force that resists the relative motion between these two surfaces.

4. **Defining the Force**: This resisting force is known as friction. Friction is the force that opposes the motion of one surface relative to another.

5. **Connecting to Writing**: In the context of writing, friction allows the ink from the pen or the graphite from the pencil to adhere to the paper. This adherence is what enables us to leave marks on the paper as we write.

6. **Conclusion**: Therefore, the correct answer to the question is "friction". It is the friction between the surfaces of the paper and the nib of a pen or the tip of a pencil that enables us to write on the paper.

**Final Answer**: Friction

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