Question

what does this sign mean? a winding road ahead - first curve to the left b road curves to the left, and side road entering from the right c 270 degree turn to the left ahead

Explanation:

This sign indicates that the road curves to the left and there is a side - road entering from the right. The arrow and the split in the symbol represent the main road's curve and the side - road's entry.

Answer:

B. Road curves to the left, and side road entering from the right