Answer: They lie in different planes and will never intersect.
Explanation:
Skew lines are lines that do not intersect and that also are not parallel. For example, if we were in a 2d dimensional space, the lines should intersect or be parallel, so from this, we know that skew lines only exist in 3d or above.
And also from that, we can conclude that skew lines are lines that do not intersect and must live in different planes.
Then the correct option is the first one:
They lie in different planes and will never intersect.