A critic should always tell his readers the details of the plot. true or false

He can decide whether to do that or not. Its not necessary if he does not want to.

A critic is the one who gives his opinion, suggestions, impression or anything he could say to a certain story by breaking the plots down and criticize the good and bad side of every character’s decision. With this, however, it is not a critic’s job to always spill the beans of the whole story to the reader because he critiques, not summarizes. His critique could be the basis of other readers, whether to read or entertain the story or not.