Monologues can be written for all of the following purposes EXCEPT for:
to allow a character to have more lines. Option B is correct.
In theatre, a monologue is a speech delivered by a single character, most often to convey their mental thoughts aloud, though sometimes also to directly address another character or the audience. Monologues have much in common with numerous other literary devices including soliloquies, apostrophes, and asides.