Are you approaching a major road in the presented situation?

Description
§ 21 para. 1 pt. 1 of the Regulation of the Ministers of Infrastructure and of Internal Affairs and Administration of 31 July 2002 on road signs and signals (Journal of Laws No. 170, item 1393, as amended).
Explanation
Correct answer: Yes
Yes. Here, the B-20 STOP sign stands before a junction with a priority road. Stop at the designated place or, if none is marked, where you can assess traffic on the priority road, and give way to vehicles travelling along it.