Question

The recipe called for one-third of a cup of flour, but I accidentally put in three cups. Why does one-third contain a hyphen in this sentence?
a.to emphasize the mistake that was made
b.to indicate a form of measurement
c.fractions are hyphenated when used as adjectives
d.numbers are always hyphenated

Answer 1

According to the grammar rule regarding numbers, when a compound number is written out, or a fraction is used as an adjective, these should be written using a hyphen between its components. In this case, our support is the latter as one-third is a fraction and not a compound number.

Therefore, your best answer is option C.