The statements you provided refer to the movement of ideas and goods during the Middle Ages. The statement that most accurately describes this context is:
The mountains of Europe made transportation and the spread of goods and ideas difficult.
While the rivers of Europe did facilitate the movement of people and goods, it is the geographical barriers, like mountains, that often hindered easy transportation and the exchange of ideas.
Other statements either overstate the role of oceans as the sole means of travel to Asia or misinterpret the flow direction of rivers in Europe, which actually enabled trade and cultural exchange.