In this profession-based odd-man-out question, four items are given: Neurologist, Dentist, Architect and Paediatrician. Three of these are medical specialists, while one is a professional from a completely different field (building design). Which option represents the odd item on the basis of profession type?

Introduction / Context:
This question is a verbal odd-man-out problem related to professions. The four options in the stem are Neurologist, Dentist, Architect and Paediatrician, which correspond to choices A, B, C and D. In competitive exams, such questions check whether you can classify professions into broader categories like medical, engineering or arts. Here, three professions belong to the field of medicine, while one belongs to architecture and building design.

Given Data / Assumptions:
Neurologist is a medical doctor specializing in the nervous system.
Dentist is a medical professional dealing with teeth and oral health.
Paediatrician is a medical doctor specializing in children’s health.
Architect is a professional who designs buildings and structures, not a medical practitioner.
The options A, B, C and D correspond to Neurologist, Dentist, Architect and Paediatrician respectively.

Concept / Approach:
The concept is grouping professions by domain. Neurologist, Dentist and Paediatrician all require medical degrees and treat patients. Architect, however, belongs to the field of engineering and design, working with plans, drawings and buildings. By separating medical professions from non-medical ones, we can clearly see which item does not fit the main group. Therefore, the profession that is not a medical specialist is the odd one out, and its corresponding option is the correct answer.

Step-by-Step Solution:
Step 1: Identify Neurologist as a medical professional focusing on disorders of the brain, spinal cord and nerves. Step 2: Identify Dentist as a medical professional who treats teeth and oral cavity problems. Step 3: Identify Paediatrician as a medical doctor who treats infants and children. Step 4: Identify Architect as a professional who designs buildings, prepares construction plans and works in the field of architecture. Step 5: Observe that Neurologist, Dentist and Paediatrician all belong to medicine, whereas Architect does not. Step 6: Map the professions to options: A = Neurologist, B = Dentist, C = Architect and D = Paediatrician. Therefore, option C is the odd one out.
Verification / Alternative check:
You can also verify by imagining typical workplaces. Neurologists, Dentists and Paediatricians work in hospitals, clinics or medical centers and treat patients. Architects, on the other hand, generally work in architectural firms, construction companies or design studios and deal with drawings and buildings instead of diagnosing and treating patients. This clear difference in job activities confirms that Architect is the odd profession among the four and that option C is correct.

Why Other Options Are Wrong:
Option A (Neurologist) represents a doctor and fits into the group of medical specialists, so it is not the odd one out.
Option B (Dentist) is also a medical professional dealing with health issues, fitting the medical group perfectly.
Option D (Paediatrician) again is a medical doctor who treats children and belongs to the same domain as Neurologist and Dentist.
Option C (Architect) is from a different profession altogether and does not belong to the medical field.

Common Pitfalls:
A common mistake is to focus on how common or familiar a profession is instead of its domain. Some students may pick Dentist simply because it feels different from Neurologist and Paediatrician in terms of specialization, but all three are still doctors. The correct approach is to identify whether the professions are all in the same broad field or not. Another pitfall is forgetting the mapping between the words in the stem and the options A, B, C and D, which can lead to confusion even if the odd profession has been correctly identified.

Final Answer:
The non-medical profession and therefore the odd one out is Architect, represented by option C.