Answer: Third option is correct.
Step-by-step explanation:
Since we have given that
Amount she saved in the bank = $43
Amount she received each Saturday = $25
Number of Saturdays she babysits = 3
So, Amount she earned = 
Amount she earned by washing her mother's car = $14
Total amount she saved with her is given by

But she needs to save = $170
So, Amount she needs more is given by

Hence, Third option is correct.