Sentence 1: Jacob asked his parents for a car for his birthday. 
 Sentence 3: They went to the dealership and looked around 
 Sentence 4:  After looking for hours, they decided on a Mustang 
 Sentence 5:  Jacob was excited and thanked his parents profusely 
 Option 1: They did not buy one for him. 
 Option 2: They decided to buy one for him.