To compare the values of a, b, c, and d, we can calculate each of them and then compare the results.
a) 20% of 45 = 0.20 x 45 = 9
b) 25% of 60 = 0.25 x 60 = 15
c) 2% of 800 = 0.02 x 800 = 16
d) 74% of 20 = 0.74 x 20 = 14.8
Comparing the values, we see that:
b > c > a > d
Therefore, the answer is option (b) 25% of 60.