571. Over five thousand years ago, archaeologists have discovered that Mesopotamian cooks were preparing chicken with coriander and tamarind, just as Egyptian cooks are still doing today.

(A) Over five thousand years ago, archaeologists have discovered that
(B) Over five thousand years ago, archaeologists had discovered that
(C) Archaeologists have discovered that, over five thousand years ago,
(D) Over five thousand years ago, as archaeologists have discovered it,
(E) Archaeologists have discovered, over five thousand years ago, that

Solution:

Modifiers

A, B, D, and E: “over five thousand years ago” incorrectly modifies “archaeologists have discovered”. It illogically suggests that “archaeologists…discovered…over five thousand years ago” whereas the intended meaning is that “cooks were preparing chicken over five thousand years ago…”
C: “over five thousand years ago” correctly modifies “Mesopotamian cooks were preparing chicken…”.
Hence, C is the best choice.

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