What is a benefit of a well-concealed cache?

A well-concealed cache primarily serves the purpose of protecting its contents from enemy detection. This is crucial in a counter-improvised explosive device (CIED) context because the visibility of explosives or related components can lead to their neutralization or exploitation by adversaries. The effectiveness of a cache relies on its concealment, which minimizes the likelihood of discovery through surveillance or reconnaissance.

The other options do not align with this primary purpose. While ease of access may be convenient for the cache's user, it often compromises concealment. A large size typically makes it more difficult to hide effectively, reducing the benefit of being concealed. Lastly, while a cache might be designed for quick evacuation, this design would not inherently deliver the same level of protection from detection that a well-concealed cache offers. Thus, the advantage of security from enemy detection stands out as the most critical benefit.