I suppose your question is which of these countries have a coastline?
Andorra - no
Austria - no
Germany - yes
Greece - yes
Portugal - yes
Sweden - yes
Switzerland - no
The Netherlands - yes
I think your answer would be b.
Answer:
Countries trade with each other when, on their own, they do not have the resources, or capacity to satisfy their own needs and wants. By developing and exploiting their domestic scarce resources, countries can produce a surplus, and trade this for the resources they need.
Frances most succesful colony was canada