Analogy — Ink : Pen :: Blood : ? Pick the option that stands to “blood” as a conduit or carrier, analogous to how a pen carries or contains ink.
Correct Answer: Vein
Introduction / Context:“Ink : Pen” captures a container/conduit relationship: a pen holds and delivers ink. For blood, we need the bodily structure that contains and conducts it. Among the options, only one names the anatomical conduit for blood.
Given Data / Assumptions:
- Pen carries/dispenses ink.
- Blood is carried within vessels (arteries and veins).
- The option should be a conduit, not an event, role, or action.
Concept / Approach:Preserve the carrier–content relation. In human anatomy, “vein” and “artery” are the principal conduits. Since only “vein” appears, it is the appropriate analogue for “pen” with respect to “blood.”
Step-by-Step Solution:
Identify relation: content → conduit (ink → pen).Map to physiology: blood → vein (also arteries, but not offered).Eliminate non-conduit options such as “donation,” “accident,” or “doctor.”Verification / Alternative check:Basic biology: veins return blood to the heart; arteries carry blood away. The presence of “vein” makes it the correct conduit counterpart.
Why Other Options Are Wrong:
- Donation — an act, not a vessel.
- Accident — an event.
- Doctor — a person/profession, not a carrier.
Common Pitfalls:Selecting a contextually related term (doctor) instead of the structural carrier demanded by the analogy.
Final Answer:Vein