Is "after class began" a depedent clause?

Read these sentences from edgar allan poe's "the angel of the odd": it was a chilly november afternoon. i had just consummated an unusually hearty dinner, of which the dyspeptic truffe formed not the least important item, and was sitting alone in the dining-room with my feet upon the fender and at my elbow a small table which i had rolled up to the fire, … which element of this text suggests the events happened long ago? details about a fire descriptions of the furniture use of first-person narrator word choice and word order

Wich statements best identifies a problem with this method

Which sentence is written correctly? mrs. ellis, a petite woman, wore the finest dresses from paris. mrs. ellis a petite woman, wore the finest dresses from paris. mrs. ellis, a petite woman wore the finest dresses from paris. mrs. ellis a petite woman wore the finest dresses from paris.