Sentence 1: Jennifer was always feeling dizzy at work. 
 Sentence 3: The doctor asked her how much water she drinks which is about a glass 
 Sentence 4:  The doctor told her she needs to be drinking eight glasses per day 
 Sentence 5:  She has done that for a week now and feels better 
 Option 1: She went to the doctor because of it. 
 Option 2: She was afraid of going to the doctor to see what it is.