Step 1: Identifying Types of Clay.
Kaolin clay is a fine-particle clay known for its smooth texture and is widely used for making porcelain and other fine pottery. It has the ability to hold intricate details.
Step 2: Analysis of options.
- (1) Sandstone clay: Incorrect, sandstone clay is coarse and not suitable for fine pottery.
- (2) Greenware clay: Incorrect, greenware refers to pottery that has been shaped but not yet fired.
- (3) Kaolin clay: Correct, this clay is known for its fine texture and is commonly used for high-quality pottery.
- (4) Synthetic clay: Incorrect, synthetic clay is man-made and not commonly used for traditional ceramics.
Step 3: Conclusion.
Thus, the correct answer is (3) Kaolin clay.