The documentary was criticized for its overly ______ depiction of the historical event, glossing over nuances and presenting a simplified narrative that favored a particular viewpoint.

✓ Correct Answer: Option C

A documentary that 'glosses over nuances and presents a simplified narrative that favored a particular viewpoint' is best described as 'didactic' (intended to teach, particularly in having moral instruction as an ulterior motive) or overly instructive/simplistic.