Answer:
Option C is correct.
Step-by-step explanation:
Given: Total number of time coin is flipped = 70
number of time coin lands on tail = 28
To find: relative frequency of coin landing on tail.
First we find Probability then convert it into percentage.
[tex]Probability=\frac{Number\:of\:favorable\:outcome}{Total\:number\:of\:outcome}=\frac{28}{70}=\frac{2}{5}[/tex]
Now percentage = [tex]\frac{2}{5}\times100=2\times20=40[/tex] %
Therefore, Option C is correct.