Question

Which words best help the reader understand the meaning of the word "glibly" in the following sentence from the story? To know the Old and New Testaments by heart and be able to recite them glibly, forward or backward, or begin at random anywhere in the book and recite both ways and never trip or make a mistake, is no extravagant mass of knowledge, and no marvelous facility, compared to a pilot's massed knowledge of the Mississippi and his marvelous facility in the handling of it.
options:

never trip, no marvelous facility

Old and New Testament, Mississippi

knowledge, marvelou