Question 4.

Option A:

Indeed, they might be twins, the progeny of the same parents. Insofar as this proves to be the case, my linkage of both here will be uncomfortably close for some readers.

The above excerpt implies that utopia and dystopia might be twins. The level of certainty is not absolute. However, Option A goes one step further to assert that they are twins and the progeny of the same parents. Hence, A cannot be inferred and is the answer. 'Insofar as this proves to be the case' can cause confusion while answering. But note that the case the author is talking about is the level of similarity between the two. Hence, what is being proven is that the two are quite similar to each other, and hence some would presume that they are twins. The excerpt, however, does not support that they actually are.

Option B: The whole passage supports the inference that utopias can be perceived as dystopias by different people. E.g. The author mentions that where some people push for relentless transparency so that they are secure, some people would perceive this as a breach of their privacy. Hence, a utopia for the former would be a dystopia for the latter.

Option C: 

People become more alike in appearance, opinion, and outlook than they often have been. Unity, order, and homogeneity thus prevail at the cost of individuality and diversity. This model, as J. C. Davis demonstrates, dominated early modern utopianism. . . . And utopian homogeneity remains a familiar theme well into the twentieth century.

Option C is a direct inference from the above excerpt. It has been mentioned that this theme of homogeneity and uniformity dominated early modern utopianism.

Option D: Throughout the passage, the author deals with conceptions of utopian societies as dealt with in literary works. We can infer that utopian societies do exist in literature where the characters practice traditions that the author made up to portray a utopian society.