Which two lines (taken from a sonnet) constitute a couplet? a. "When I have fears that I may cease to be / Before my pen has gleaned my teeming brain . . ." b. "Much have I traveled in the realms of gold, / And many goodly states and kingdoms seen . . ." c. "Looked at each other with a wild surmise-- / Silent, upon a peak in Darien." d. "Of the wide world I stand alone, and think / Till Love and Fame to nothingness do sink."