In which sentence is the fraction written correctly?

A.Leah jogged one-half of a mile.
B.She received three quarters of the votes.
C.She donated one-third of the profits to charity.
I think it C or B but really C

What's the difference between A and C?

B is wrong. A hyphen is needed between three and quarters.

I got it the answer is B but u maybe be right thanks for your help though

You're right; it's B.

I was wrong. And I just learned something.
https://www.margieholdscourt.com/fractions-and-hyphens/

Oh ok thanks at least u try your best!

You're welcome. :-)

I taught middle and high school English and social studies for 32 years. Somehow that rule never came up in all of my education.

and I learned it also for the first time.

Glad I'm not the only one. <g>

CORRECTION!

Hyphens are always used in fractions, according to the Chicago Manual of Style.

https://www.chicagomanualofstyle.org/16/images/ch07_tab01.pdf

This manual is published by the University of Chicago and is one of the two or three standards for professionals and publishers.

Therefore, both A and C are correct answers for this question.

Yes, I learned Chicago years ago, and it stuck. MLA is the death of me.

also, many MS math texts teach hyphens from 21 to 99. Saxon Math sticks in my mind on this.