Option A: Wrong
This statement is unambiguously explanatory to the audience but it does not carry enough linguistic weight to conform to the summary aim of the writer nor does it, to the listener or target reader. It is bereft of sufficient information as regards the subject matter.

Option B: Right
This statement states in actual terms the mind and wish of the writer. It is an exclusive statement that is not based on assumption. It is coherent, concise and understandable easily without any form of ambiguity.

Option C: Wrong
This line of the statement has given the statement another dimension that clearly differs away from the intended description. ''To have been'' is a past participle sentence formation which does not coincide with the mood of the writer who's talking in the present terms.

Option D: Wrong
This sentence with the participation of the verb ''are'' seeks to offer more semantic explanation which unfortunately, would render the sentence too clustered. ''civilizations'' here should be looked beyond the plural form but as a subject on its own.


Option E: Wrong
This is more like synonym word replacement. Here, ''consider'' is directly used instead of ''regard'' which does not offer much difference to the option in A and as such doesn't explain the aim of the question to B answer.