Which outcome arises if humidity causes index mirror corrosion in an 18th-century sextant during celestial navigation?

💡 Explanation

When humidity corrodes the sextant's index mirror, reflective accuracy degrades because oxidation alters the surface, producing parallax errors during angular alignment. Therefore altitude errors result, rather than chronometer issues, hull instability or rudder failure, which depend on different shipboard systems and vulnerabilities.

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