The changing visions we have conjugated in our imaginations are made manifest in how Neanderthals are represented in artistic recreations - from the strikingly bestial creatures of the Victorian era, to the exquisite digital portraits of the present.

The sentence talks about how the visions that we have developed in our imagination are conveyed by how Neanderthals are depicted in artistic works from the savage creatures of the Victorian era to the detailed digital portraits of the present. CONJUGATED means to be combined with, and will be inapt here. CONJURED means made up or thought of, which will be more apt here. MANIFEST means clear or evident, RECREATIONS means the process of creating something again, BESTIAL means animal-like, all of which are contextually appropriate here. Since only 1 word is inappropriate, (b) is the right answer.