母___作ったカレーは世界一おいしいです。
Q. Which particle marks 母 inside the relative clause?
Translation
The curry my mother makes is the best in the world.
Explanation
Inside a relative clause, the subject is normally marked by が (or sometimes の): 母が作ったカレー. A topic-marking は is generally avoided in this neutral pattern, though contrastive は can occur in more specialized contexts.