Step 1: Understanding Raku Pottery.
Raku pottery is a traditional Japanese form known for its un-glazed, rustic exterior and distinctive patchwork patterns. It is typically fired at low temperatures, which gives it a unique texture and look.
Step 2: Analysis of options.
- (1) Raku: Correct, known for its un-glazed exterior and distinctive patchwork.
- (2) Majolica: A type of tin-glazed pottery, which has a glossy surface, unlike Raku.
- (3) Blue pottery: Known for its blue-colored designs, this is not related to the patchwork characteristic of Raku.
- (4) Hagi: Known for its subtle and simple glaze, unlike Raku's un-glazed finish.
Step 3: Conclusion.
Thus, the correct answer is (1) Raku.