Option B:
The relationship between angle j and angle k is j° + k° = 180°.
Solution:
Given JKLM is a parallelogram.
angle J and angle K are consecutive angles.
To find the relationship between angle j and angle k:
In parallelogram, the sum of the consecutive angles is 180°.
⇒ m∠J + m∠K = 180°
⇒ j° + k° = 180°
Hence the relationship between angle j and angle k is j° + k° = 180°.
Option B is the correct answer.