Answer:
D. Hilary said that there must have been more than five thousand people at the stadium.
Explanation:
If the number is rounded or estimated, spell it out.
C is wrong because numbers higher than 99 do not need a hyphen.
1:CS
2:CS 10:CS
3:CV
4:CS
5:CS
6:CV
7:CV
8:CV
9:CS
