Britain and France and divided by the natural boundary of
-
the Alps
-
the English Channel
-
river Thames
-
river Seine
B
Correct answer
Explanation
The English Channel is the body of water that separates Great Britain from France and mainland Europe. It is approximately 560 km long and varies in width from 240 km to 34 km at the Strait of Dover. The Alps are mountains, while the Thames and Seine are rivers that flow through England and France respectively, not boundaries between them.