The OB river flows through which region

a. Central Asia
b. Siberia
c. Moldova
d. Ukraine

a or b not sure
I think B is more correct am i right?

Yes, b is correct. The Ob flows through Siberia.

http://en.wikipedia.org/wiki/Ob_River

yes b is the correct answer

To determine the correct answer, let's break down the question and use some logical reasoning.

The question is asking which region the Ob River flows through. To find the answer, we need to have some basic knowledge about the geography of the regions mentioned: Central Asia, Siberia, Moldova, and Ukraine.

Central Asia is a landlocked region in the middle of the Eurasian continent, and it is known for countries like Kazakhstan, Uzbekistan, and Turkmenistan. Moldova is a landlocked country in Eastern Europe, bordered by Ukraine and Romania. Ukraine is also a country in Eastern Europe, while Siberia is a vast geographical region in Russia.

Now, let's focus on the Ob River. The Ob River is one of the major rivers in Russia, flowing through a significant part of the country. Considering this information, we can eliminate options a and c because Central Asia and Moldova are not regions through which the Ob River flows.

This leaves us with options b and d — Siberia and Ukraine. Siberia is a massive region in Russia that spans across eastern Russia, including the area where the Ob River flows. On the other hand, although Ukraine is near Russia, the Ob River doesn't flow through Ukraine.

Therefore, based on the information provided, the correct answer is b. Siberia.