a. Segments parallel to JK : OP ( because it is in front of JK and in the same direction).
b. Segments parallel to NS : RM, QL, JO, KP. ( because the lines are in the same direction).
c. plane parallel to plane JKL: OPQ ( because it is in front of JKL and in the same direction).
d. four segments skew to RQ: JO, PK, NS, SO. ( because these segments are neither parallel nor intersecting RQ).