Answer:
B. 45,032
Step-by-step explanation:
Rounding to the nearest thousand, we look at the hundreds place
A. 45,732
7>5 so we round up
46,000
B. 45,032
0<5 so we leave it alone
45,000
C. 44,343
3 <5 so we leave it alone
44,000
D. 44,459
4 <5 so we leave it alone
44,000
