Who are the main members of The Mysterious Benedict Society?

The main members of The Mysterious Benedict Society are indeed Reynie Muldoon, Kate Wetherall, Sticky Washington, and Constance Contrere. This quartet is central to the story, as they are selected for their unique abilities and intelligence to take on challenges posed by Mr. Benedict. Each character has distinct traits and skills that contribute to the group's dynamics and their mission to thwart the nefarious plans of the Learn When School and the Chairman.

Reynie is the logical thinker and natural leader, Kate is resourceful and athletic, Sticky possesses an incredible memory and knowledge, and Constance brings a sense of determination and cleverness despite her small stature. Together, they form a team that utilizes their individual strengths to navigate the complex puzzles and obstacles they encounter throughout their journey.

The other choices do not align with the narrative of The Mysterious Benedict Society, as they refer to characters from vastly different stories—from the Harry Potter series to Spider-Man comics, and even classic children's literature with Winnie the Pooh and friends. Therefore, option B is the only valid depiction of the main characters from the intended series.