Nail is related to nail-cutter as the object which is cut is related to the tool used for cutting it. In the same way, hair is related to which tool?

Introduction / Context:
This analogy question comes from everyday life and tests practical reasoning. The first pair Nail : Nail-cutter shows a relationship between an object and the tool specifically used to cut or trim it. In the second pair Hair : ? we must choose the tool that plays a similar role for hair. Such questions are simple but require careful focus on the function of each item rather than just their general association in daily life.

Given Data / Assumptions:

• Nails are hard parts at the tips of fingers and toes.
• A nail-cutter is a small tool specifically designed to cut or trim nails.
• Hair grows on the scalp and other parts of the body and is usually trimmed for grooming.
• The options are Oil, Haircut, Scissors, and Comb.
• We assume everyday knowledge of how people manage and cut their hair.

Concept / Approach:
The relationship is object to cutting tool. Nail is the object, nail-cutter is the tool used to cut it. For hair, we have to identify the corresponding cutting tool. Scissors are the standard tool used by barbers and individuals to cut hair. Oil is applied for care or styling but is not a cutting tool. Haircut is the result or the act of cutting hair, not the tool. Comb is used to arrange or detangle hair, not to cut it. Therefore, the only option that matches the cutting function is Scissors, giving the pair Hair : Scissors.

Step-by-Step Solution:
Step 1: Recognise that the first pair connects what is cut (nail) with the tool used to cut it (nail-cutter). Step 2: Determine that the second pair must connect hair with the tool that cuts hair. Step 3: Recall that barbers and hair stylists use scissors to cut hair in most situations. Step 4: Examine the options: Oil, Haircut, Scissors, and Comb. Step 5: Oil is used for conditioning or massaging hair, haircut is the act or result of cutting, and comb is for grooming and aligning strands. Step 6: Only Scissors directly match the function of cutting hair. Choose Scissors.

Verification / Alternative check:
We can verify by placing each option into the same sentence structure. Nail is to nail-cutter as hair is to scissors sounds natural. Hair is to oil does not form the same tool relationship, because oil is not used to cut. Hair is to haircut changes the pattern because haircut is an event or style, not an instrument. Hair is to comb describes an object to grooming tool relationship, but the first pair is specifically about cutting rather than general care. Therefore, only hair and scissors have the same specific function connection as nail and nail-cutter.

Why Other Options Are Wrong:
Oil: Hair oil is used to nourish or style hair but does not cut or trim it, so it does not match the cutting tool relationship. Haircut: Haircut is the outcome or process, not the tool itself. The analogy needs an instrument like nail-cutter, not a result. Comb: A comb arranges and detangles hair but does not cut it. The primary act in the first pair is cutting, so the second pair must also involve a cutting tool.

Common Pitfalls:
One common mistake is to choose Comb because it feels strongly associated with hair. However, that ignores the functional parallel between nail-cutter and the required tool. Another pitfall is confusion between the action (haircut) and the instrument. In analogy questions, always ask whether you are matching tools, actions, objects, or results. Recognising that the first pair connects a body part with its cutting instrument leads directly to the choice of scissors as the correct answer.

Final Answer:
Nail is related to nail-cutter as an object is related to its cutting tool, and in the same way hair is related to scissors, so Scissors is the correct option.