Final answer:
Option a), 3/4, will result in a product smaller than 812 when multiplied.
Step-by-step explanation:
To find the fraction that will result in a product smaller than 812 when multiplied, we need to compare the products of each option. Let's calculate:
a) 3/4 * 812 = 609
b) 5/6 * 812 = 677.33
c) 7/8 * 812 = 711.5
d) 9/10 * 812 = 730.8
From the calculations, we can see that option a) results in a product smaller than 812. Therefore, the fraction 3/4 will result in a product smaller than 812 when multiplied.