Viceroy butterflies look much like the Monarch. Because of this, they are saved from predators also. This protective mechanism is BEST called

The correct answer is mimicry.

Explanation:

In biology, a phenomenon featured by the superficial resemblance of two or more organisms, which are not closely associated taxonomically is termed a mimicry. This resemblance demonstrates a benefit like safeguarding from predation.

Mimicry can involve behavioral or physical traits, and well-studied illustrations are Mullerian and Batesian mimicry. The resemblances, which evolve in mimicry can be acoustic, visual, tactile, chemical, or combinations of these sensory modalities.

The answer is mimicry, I believe.