To obtain a brilliant, high-gloss finish on woodwork or furniture, which type of varnish is generally preferred? (Consider drying speed, clarity, and surface sheen.)

Introduction / Context:
Varnishes are transparent finishes that protect and beautify wood. Achieving a brilliant, mirror-like finish depends on resin type, solvent, drying behavior, and film clarity. The question asks which varnish typically yields the highest gloss and fast build for fine finishes.

Given Data / Assumptions:

• Spirit varnishes use alcohol as the solvent (e.g., shellac-based polishes).
• Oil varnishes cure by oxidation, producing durable but slower-building films.
• Water varnish is not a standard term for high-gloss traditional finishing.
• 'Turpentine varnish' usually refers to the thinner/solvent rather than a distinct high-gloss system.

Concept / Approach:
Spirit varnish (e.g., French polish systems) dries rapidly, levels well, and can be rubbed to a brilliant sheen with multiple thin coats. Oil varnishes are durable but usually result in a slightly softer gloss and take longer to cure; they are excellent for wear resistance but not the quickest route to a brilliant finish.

Step-by-Step Solution:

Verification / Alternative check:
Traditional finishing guides cite French polishing (a spirit varnish technique) for achieving the deepest gloss on fine furniture and musical instruments.

Why Other Options Are Wrong:

• Water varnish: not a standard high-gloss category in traditional practice.
• Turpentine varnish: turpentine is a solvent; gloss depends on resin system.
• Oil varnish: durable, but slower to reach brilliant mirror gloss compared with spirit systems.
• None of these: incorrect because spirit varnish is appropriate.

Common Pitfalls:
Confusing solvent names with varnish types; overlooking surface prep and rubbing techniques that also influence final gloss.

Final Answer:
Spirit varnish