Answer:
PQRS → P'Q'R'S'
Hope this helps you.
1/8 because 1/4 x 1/2 = 1/8
to make the proportion we make the ratio of the similar sides
For example
4/8 = 12/x
or we can write it as 4/12 = 8/x
or 12/x = 4/8
So last option is correct
