Ello, i’m a little stuck on how to go about solving this one. an explication would be great

B, D and F are midpoints
so
DB = 1/2 (AE)
BF = 1/2 (CE)
DF = 1/2(AC)
in this case you only need to find out DF = ?
 and you also know AC = 50
so
DF = 1/2 (AC)
DF = 1/2(50)
DF = 25
answer
DF = 25

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.