What does the author mean by the simile "Nag, the big black cobra, lifted one-third of himself clear of the ground and balancing to and fro like a dandelion tuft balances in the wind"?

Which phrase most closely matches the meaning of the word pleasantries in this excerpt from susan glaspell's trifles? county attorney: (as one turning from serious things to little pleasantries) well ladies, have you decided whether she was going to quilt it or knot it? a. tea cakes b. trivial talk c. foolish actions d. childish behavior