Answer:
G
Step-by-step explanation:
Given that s varies directly with t then the equation relating them is
s = kt ← k is the constant of variation
To find k use the condition when t = 27, s = 3 , then
3 = 27k ( divide both sides by 27 )
= k, that is
k = 
s =
t ← equation of variation
When t = 63, then
s =
× 63 = 7 → G