Problem: In the following sentence, how should the number usage be corrected?
"Project development was documented through a series of 5 10-page reports."
Question options:
a) 10-page should be written out as "ten-page."
b) 5 should be written out as "five."
c) 5 should be written out as "five" and 10-page should be written out as "ten-page."
d) 10-page should be written out as "ten page," with the hyphen omitted.