Thanks for bringing this question to the forum. Let me put up a complete explanation and then answer your question at the bottom.
Question Type:
Identification EXCEPTTask: We gotta knock out four of these, using line references, or we have to find one correct answer that seems to go beyond the passage.
(A) line 6 - 9
(B) line 19-21 tells us THAT they did it ... lines 12-15 tell us WHY they did it
(C) We were never told this
(D) lines 32-35
(E) lines 48-49
(C) is the correct answer.============
For the previous poster, your pronouns are confusing me (and maybe you).
You wrote
"Sure they wanted to support an image of European dominance and they already openly acknowledged the hybrid past, but it confuses me that they purged the information or ignored it, but the passage also says that they acknowledged it."
Half of those "theys" refer to 19th century European commentators, and the other "theys" refer to ancient Greek writers.
Ancient Greek writers openly acknowledged that part of their past was African (their hybrid past).
19th century European scholars wanted to embrace the "EUROPEAN" parts of Ancient Greece, so whenever these European scholars would read the old writings of Greek writers and see those writers acknowledging the African influence, the European scholars would choose to ignore that part.