Why must you drive with particular caution here?

Your answer is fully correct. You must drive with particular caution here for three reasons:

1. The roadway is slippery because of the snow and ice, increasing the risk of slipping or losing control, so you need to reduce speed and be ready to react carefully.
2. The view is obscured by the bend, which means you cannot see far ahead, making it difficult to anticipate oncoming traffic or hazards around the corner.
3. The roadway is made narrower by the wrongly parked car. This limits the available space for driving, requiring extra attention to avoid colliding with the parked vehicle or other obstacles.

In such situations, German traffic rules emphasize the importance of caution to prevent accidents due to reduced traction, limited visibility, and restricted road width. Always adapt your speed and be prepared to stop if necessary.