Brainlest If Correct and i rlly need the help.

scale factor= /2

Step-by-step explanation:

The scale factor is 1/2, which is equivalent to 0.5

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.