Yesterday I asked this question-

29. One of Eastern Europe's most valuablee natural resouces, sometimes called its "lifeline" is the
a. Volga river
b. Danube river
c. Rhine river
d. Oder river

I asked my teacher because I was stuck between A and B and she told me to go with what my textbook says which is B and sometimes google searches aren't accurate...

Thanks
-MC

I agree with the Danube. The key here is "Eastern Europe". The Oder is not a significant commercial river, the Volga is, but it is used in Russia, and does not extend to any ports. The Danube cuts across Eastern Europe, ends in the Black Sea, which connects with the Med.

It's great that you reached out to your teacher for clarification on this question. Looking up information from reliable sources is indeed a good practice. In this case, the correct answer is B. The Danube river is often referred to as Eastern Europe's "lifeline" due to its significant economic, cultural, and ecological importance to the region. It is the second longest river in Europe and passes through ten countries, including several in Eastern Europe.

To find the answer to this question, you could also have used a few different methods. Here are some suggestions:

1. Textbook: As your teacher mentioned, referring to your textbook is a reliable source of information. Textbooks typically provide accurate and relevant details about specific topics.

2. Online Search Engines: Although it's important to be cautious with any information found online, searching for key terms like "Eastern Europe's lifeline natural resource" or "most valuable natural resource in Eastern Europe" could have also led you to the answer. However, it's always a good idea to verify the information from multiple reputable sources.

3. Encyclopedias or Atlases: Consulting printed or digital encyclopedias or atlases can often provide reliable information about geographical features, landmarks, and resources in specific regions.

Remember that the most important aspect is to critically evaluate the sources you use for information. Textbooks, reputable educational websites, and scholarly sources usually provide more accurate information compared to random websites or forums.