Understanding the Role of a Carpenter
A carpenter is a skilled tradesperson who specializes in working with wood and other materials to create various structures and products. Let's explore why the correct answer to what a carpenter makes is option 'D': tables and chairs.

Key Responsibilities of a Carpenter
- **Woodworking Skills**: Carpenters primarily work with wood. They possess expertise in cutting, shaping, and joining materials to build furniture and structures.
- **Types of Products**: Common items made by carpenters include:
- **Tables**: Essential furniture for homes, offices, and restaurants.
- **Chairs**: Another fundamental piece of furniture used in various settings.

Why Other Options Are Incorrect
- **Cakes (a)**: This task is typically the realm of bakers, not carpenters. Carpenters don't work with baked goods.
- **Pots (b)**: Pots are usually made by potters or metalworkers, not carpenters. This involves materials and techniques distinct from woodworking.
- **Pipes (c)**: Pipes are generally crafted by plumbers or metalworkers, focusing on plumbing and construction, rather than woodworking.

Conclusion
Carpenters focus on creating wooden structures like tables and chairs, which are integral to everyday life. Understanding their role helps us appreciate the craftsmanship that goes into making functional and aesthetic furniture. Thus, the correct answer to what a carpenter makes is indeed option 'D': tables and chairs.