Analogies – Choose the pair that best completes the relationship. PSYCHOLOGIST : NEUROSIS :: ?

Introduction / Context:
A psychologist treats or works with neurosis. This is a 'professional : condition treated' relationship. Select the option where the specialist corresponds to a condition commonly within that specialist's domain.

Given Data / Assumptions:

• Psychologist → neurosis (condition addressed).
• We seek specialist → typical condition.

Concept / Approach:
Confirm domain alignment. Discard reversed or mismatched pairs where the condition does not belong to that specialty or the order is inverted.

Step-by-Step Solution:
1) Map PSYCHOLOGIST : NEUROSIS as clinician : treated condition.2) 'ophthalmologist : cataract' is correct (eye surgeon treats cataracts).3) 'dermatologist : fracture' is incorrect specialty; fractures are orthopedic.4) 'infant : pediatrician' reverses the relation (patient : doctor).5) 'rash : orthopedist' is wrong specialty; rashes are dermatological.6) 'oncologist : measles' is wrong specialty; measles is infectious disease/pediatrics, not oncology.

Verification / Alternative check:
Check professional scope: Ophthalmologists diagnose and treat cataracts routinely, mirroring the given pair's structure.

Why Other Options Are Wrong:

• dermatologist : fracture – Specialty mismatch.
• infant : pediatrician – Reversed order.
• rash : orthopedist – Specialty mismatch.
• oncologist : measles – Specialty mismatch.

Common Pitfalls:
Be careful with reversed or near-domain options that are plausible at a glance. Confirm that the second term is a hallmark case within the specialist's practice.

Final Answer:
ophthalmologist : cataract