Which sentence contains an essential adjective clause?

what confuses me is the difference between ultimate and indoor frisbee rules.
because of weather conditions, some countries only play indoor ultimate frisbee.
indoor ultimate frisbee is the only version that i enjoy playing.
indoor ultimate frisbee, which is a another version of the sport, requires fewer players.

Select the correct answer. which of these lines from “the raven” by edgar allan poe to create the dark and gloomy tone of the poem? a. "'tis some visiter entreating entrance at my chamber door— some late visiter entreating entrance at my chamber door; b. once upon a midnight dreary, while i pondered weak and weary, over many a quaint and curious volume of forgotten lore— c. "and so faintly you came tapping, tapping at my chamber door, that i scarce was sure i heard you"—here i opened wide the door— d. bird or beast above the sculptured bust above his chamber door, with such name as "nevermore." hurry