Thermometer Sensitivity and Range Comparison Steps:

• Sensitivity measures scale divisions per degree Celsius; more divisions indicate higher sensitivity for precise readings.
• Range is the total temperature span from lowest to highest marking; larger span means greater range.
• Examine diagrams: Q has the finest scale (most divisions over a fixed span), giving highest sensitivity.
• R covers the widest temperature span (fewest divisions over broadest range), giving greatest range.

Why C is correct:

• C matches definitions: Q's numerous small divisions maximize sensitivity (change per degree), while R's broad span maximizes range, per standard thermometer design principles.

Why the others are wrong:

• A: Incorrectly assigns R greatest range but P (coarser scale) lacks highest sensitivity.
• B: Wrongly pairs P's lower sensitivity with S's narrower range.
• D: Misidentifies S (limited span) as greatest range despite Q's high sensitivity.

Final answer: C