45.03−31.73≈45, point, 03, minus, 31, point, 73, approximately equals

Choose 1 answer:
Choose 1 answer:
(Choice A)
4
44
A
4
44
(Choice B)
7
77
B
7
77
(Choice C)
13
1313
C
13
1313
(Choice D)
16
1616
D
16
16

The difference is $45.03-31.73=13.30$. Rounded to the nearest whole number, this is 13. Therefore, the answer is $\boxed{\textbf{(C) }13}$.