Nfugard’s "master harold"…and the boys, hally’s mother’s repeated phone calls contribute to what structural element of the play? climax falling action resolution rising action

What information from the story you check the prediction that dr. lanyon will reveal shocking information about dr. jekyll? “the fire burned in the grate; a lamp was set lighted on the chimney shelf, for even in the houses the fog began to lie thickly; and there, close up to the warmth, sat dr. jekyll, looking deathly sick.” “as soon as he got home, utterson sat down and wrote to jekyll, complaining of his exclusion from the house, and asking the cause of this unhappy break with lanyon . .” “within there was another enclosure, likewise sealed, and marked upon the cover as ‘not to be opened till the death or disappearance of dr. henry jekyll.’” “lanyon had been there; and the face of the host had looked from one to the other as in the old days when the trio were inseparable friends.”