How does shirley jackson utilize point of view to build suspense?

she uses the teacher's point of view to reveal surprising details about laurie that are unknown to his parents.
she limits the reader to the point of view of laurie's family, which keeps the reader as unaware of the true situation as the parents.
she structures the story to be told from laurie's point of view, so that the reader can see his perspective and anticipate the plot twist.
she structures the story so it is told from multiple points of view, so that the reader can see all elements of the plot.