SAT Question d3ca5d59: Words In Context answer and explanation

English - Words In Context - Fill In Blank Single Word
0:00
FREE OFFICIAL BANK
Stephen Hannock’s luminous landscape paintings are appealing to viewers but have elicited little commentary from contemporary critics, a phenomenon that may be due to the very fact that the paintings seem so ______. Many critics focus their attention on art that is cryptic or overtly challenging.
210
Difficulty:Hard
Which choice completes the text with the most logical and precise word or phrase?