Sentence 1: Wanda and Katie wanted to go the the mall. 
 Sentence 3: Eventually they realized they were extremely lost 
 Sentence 4:  They called their parents and they helped them to get home 
 Sentence 5:  Wanda's parents bought her a GPS 
 Option 1: They both lacked driving experience, but Wanda drove them anyways. 
 Option 2: They both lacked driving experience, so they stayed home.