From the following options, which word pair best matches the tool–user relationship in “Carpenter : hammer”?

Introduction / Context:
This analogy question focuses on the relationship between a worker and the tool commonly used in that profession. A carpenter is a skilled tradesperson who works with wood, and a hammer is one of the main tools used in carpentry to drive nails and assemble structures. Your task is to identify the pair among the options that has the same “professional : primary tool” relationship as “carpenter : hammer”.

Given Data / Assumptions:

• Reference pair: carpenter and hammer.
• Options: computer : writer, crane : builder, axe : logger, plumber : wrench, driver : car.
• We assume each pair, if valid, would show a user and the item used.

Concept / Approach:
The relationship is clearly “person who performs a job” to “hand tool typically used in that job.” For a carpenter, the hammer is a basic hand tool central to many tasks. Among the options, the closest match is plumber : wrench, because a plumber is a professional who works on pipes and fittings, and a wrench is a fundamental hand tool used to tighten and loosen pipe joints. The other pairs either reverse the relationship or use items that are not simple hand tools in the same sense.

Step-by-Step Solution:

Step 1: Identify the structure of the first pair. Carpenter refers to a person with a trade, and hammer is a tool used by that person. Step 2: Define the pattern as “professional : main hand tool.” Step 3: Examine each option. For computer : writer, the computer is a tool and the writer is the user, but the order is reversed. Step 4: For crane : builder, the crane is a machine rather than a simple hand tool, and the order is again reversed. Step 5: Axe : logger has the tool first and user second; the pattern is “tool : user”, not “user : tool.” Step 6: Plumber : wrench matches the pattern exactly, with the worker first and the main hand tool second.

Verification / Alternative check:
Compare carpenter : hammer and plumber : wrench. In both cases the first term is a trade or profession, and the second term is a handheld tool essential for that work. In contrast, driver : car combines a person and a vehicle, not a simple hand tool, which slightly shifts the relationship. Computer : writer and axe : logger reverse the order. Crane : builder also reverses the order and uses a heavy machine rather than a basic tool. This confirms plumber : wrench as the most precise analogy.

Why Other Options Are Wrong:
Computer : writer would need to be “writer : computer” to follow the same order, and even then a computer is not as fundamental to writing as a hammer is to carpentry in traditional terms. Crane : builder also reverses the order and refers to a large machine, not a hand tool. Axe : logger again has the tool listed first. Driver : car involves a person and the vehicle they operate, which is different from the pattern of hand tools. Only plumber : wrench respects both the order and the nature of the relationship.

Common Pitfalls:
Candidates often ignore word order in analogy questions and choose any pair with a believable relation. However, the precise order and type of relationship matter. When you consistently classify the first words as professionals and the second as core hand tools, plumber : wrench stands out as the only fully correct match.

Final Answer:
The correct analogous pair is Plumber : wrench, which mirrors the worker–tool relationship in “Carpenter : hammer”.