Skew lines are two lines that do not intersect and are not parallel.
Consider all options:
A. Lines DE and GE intersect at point E, then they are not skew lines.
B. Lines EI and GK are parallel, then they are not skew lines.
C. Lines GK and DH are parallel, then they are not skew lines.
D. Lines HI and DF lie in two parallel planes IKJH and EGFD, respectively. Then these lines do not intersect. Lines HI and DF are not parallel, then these lines are skew lines.
Answer: correct choice is D
