<p>(Of ancient origin)(A), the game of checkers (was played)(B) in Egypt (during the time)(C) of the pharaohs and (is mentioned)(D) in the writings of Homer and Plato.</p>
<p>Please explain!!</p>
<p>There is no error in this sentence. “Of ancient origin” correctly modifies the game of checker. “Was played” is correct because it is in the past tense, describing the time of the pharaohs almost 3500 years ago. “Is mentioned” is correct because the contents of literature are always stated in the present tense.</p>