3
Check options
(a) Sharp - This is a quality, not function
(b) Cut - Yes, knife is used to cut
(c) Steel - This is material, not function
(d) Kitchen - This is a place, not function
Answer: (b) Cut
Shortcut Formula 3 - REVERSE CHECK METHOD:
After selecting answer, reverse the relationship. If Bird : Nest, then does Nest : Bird make sense? Yes, nest belongs to bird. This confirms your answer