What does the statement "all that glitters is not gold" imply regarding appearances?

The statement "all that glitters is not gold" implies that appearances can be deceptive and should not be solely relied upon when making judgments about value or authenticity. This phrase warns that something may seem attractive or desirable on the outside but may not possess true worth or quality beneath the surface. It encourages critical thinking and skepticism about first impressions, suggesting that one should look deeper to understand the true nature of a situation or person rather than accepting superficial indicators.

In the context of the provided options, this interpretation aligns perfectly with the idea conveyed in the phrase, emphasizing the need to be cautious of how appearances might mislead us.