Classification — instrument/action vs object/action: Pick the pair that does not match the pattern “tool used to perform the action”: Broom : Sweep, Spoon : Feed, Nut : Crack, Soap : Bathe.

Introduction / Context:
Three options show a straightforward “instrument/agent → typical action” relation, i.e., something you use to carry out the action. One option instead presents an “object → action done to it” relation. Recognizing the direction of agency (what does vs what is acted upon) is the core trick here.

Given Data / Assumptions:

• Broom → Sweep (tool used for sweeping).
• Spoon → Feed (utensil/tool used for feeding/serving).
• Soap → Bathe (agent used while bathing/cleaning).
• Nut → Crack (nut is not the tool; it is the object being cracked).

Concept / Approach:
Determine whether the left-hand noun is the agent/instrument enabling the right-hand action. If instead it is the patient/object receiving the action, the pair breaks the dominant pattern. Three are instrument→action; one is object→action.

Step-by-Step Solution:
1) Broom: we sweep with a broom (instrument).2) Spoon: we feed/serve with a spoon (instrument).3) Soap: we bathe/wash with soap (instrument/agent).4) Nut: we do not crack with a nut; the nut is cracked (object).

Verification / Alternative check:
Use the “with-test”: if you can truthfully append “with [left-hand item]” after the action verb, it fits the instrument pattern. “Sweep with a broom,” “feed with a spoon,” “bathe with soap” pass; “crack with a nut” fails the test, confirming it as the outlier.

Why Other Options Are Wrong:
They each present a genuine tool/agent that commonly performs the named action.

Common Pitfalls:
Equating “associated with” to “instrument for.” Association is broader; we need instrumentality.

Final Answer:
Nut : Crack