Which of the following is a lever?
a bottle opener
a drinking straw
a match
a pencil

Options

A. a bottle opener
B. a drinking straw
C. a match
D. a pencil

Explanation

To determine which of the following options is a lever, let's analyze each option step by step:

1. **Understanding the concept of a lever**: A lever is a simple machine that consists of a rigid bar that pivots around a fixed point called the fulcrum. It is used to lift or move loads with less effort.

2. **Analyzing the options**:
- **A bottle opener**: When using a bottle opener, you place the tip under the bottle cap and apply force on the handle. The bottle opener acts as a lever, with the fulcrum being the edge of the bottle cap. When you push down on the handle, the other end lifts the cap off the bottle.
- **A drinking straw**: A drinking straw does not function as a lever. It is used for suction and does not have a pivot point or fulcrum to lift or move something.
- **A match**: A match is not a lever. It is a small stick that is used for striking against a surface to create a flame. It does not have the characteristics of a lever.
- **A pencil**: A pencil is used for writing and does not act as a lever. It does not have a fulcrum or a mechanism to lift or move a load.

3. **Conclusion**: Among the given options, the only item that functions as a lever is the **bottle opener**.

**Final Answer**: A bottle opener is a lever.

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