Answer:
16 compounded periods 
Step-by-step explanation:
Here ,the loan amount was not given , they asked to compute only the compounding period of the loan.,
The period of loan is 4 years
interest calculation mode is quarterly 
 = (12 months÷4 = 4 times in a year) 

 = 4 ×4 = 16 compounding periods 

Hence the 8% interest bearing 4 years loan will compounded 16 times