What is correct when driving round bends on downhill slopes?

The combination you selected is correct because both points 1 and 2 are essential for safe driving on downhill bends.

1. Braking adequately before the bend ensures that you can navigate the turn safely without needing to brake during the curve, which could lead to loss of control. This is critical in maintaining vehicle stability and traction, especially on downhill slopes where gravity can affect speed significantly.

2. Positioning your vehicle properly in the bend, so you do not intrude into the oncoming lane, is crucial for avoiding collisions. It helps you maintain control and navigate the curve without endangering other road users.

Point 3 is not necessary in this scenario because it pertains to a situation where visibility of oncoming traffic is assured, which does not apply when you are approaching a bend that may obstruct your view. Hence, the correct combination emphasizes safety and control in potentially hazardous driving conditions, as per German traffic laws. Being cautious while driving on slopes with bends is vital for road safety.