Which proofreading mark would you use to indicate what needs to be changed in this sentence? we wanted to camp at at the waterfalls.

the last choices correct you wouldn't put the squiggle line through it because there are two at instead of one

steps:

1. do 28-12= 16 girls

2. your ratio is 12: 16

3. your answer is b. 3/4

4. this correct because

12 divided by 4 is 3

16 divided by 4 is 4

5. your answer is 3/4

tending to cause harm