Answer:
The sentence that best achieves the purpose of introducing the character of Darleen to readers is:
3 . Darleen, the youngest daughter, liked quiet activities and was drawn to anything she considered unique, unusual, or beautiful.
Step-by-step explanation:
Option 3 is the only one concerning Darleen's character. We get to truly know something about her - she is quiet, probably more introverted than Kimmy, and she likes things that have something distinguishing about them.
Option 1 can be eliminated since it only mentions that the girls shared a bedroom. The same goes for option 2, which talks of Darleen's physical appearance. Finally, option 4 is also incorrect, since it simply explains why Darleen has this name. None of these options talks about her character, her personality, her likes and dislikes.