[1] Martha went to Cynthia's house right after her homework was done. [2] It was cold outside so Martha practically ran all the way there. [3] When Cynthia opened the door, she was surprised to see Martha out of breath. [4] Cynthia quickly ushered her inside to warm up. Which revision to the paragraph corrects a vague pronoun? 1. Change "her" to "Martha's" in sentence 1. 2. Change "there" to "home" in sentence 2 . 3. Change "she" to "Cynthia" in sentence 3. 4. Change "her" to "Martha" in sentence 4.