Answer:
D) 2.50%
Explanation:
The arithmetic average return is simply the mean of all given return rates. There are four return rates and their values are, 10%, 15%, 15%, and -30%
[tex]AAR = \frac{10+15 +15-10}{4}\\AAR= 2.5\%[/tex]
S&P 500 index delivered an arithmetic average annual return of 2.5% for four years