Answer
$North-South$
Work Step by Step
The definition of the bearing is the angle of $\bar {OP}$ with respect to the North-South direction; thus the answer to this question is a $North-South$ line.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.