The land bridge over the bering strait joined modern day a) greenland and canada b) alaska and siberia c)greenland and siberia d)alaska and canada

B) Alaska and Siberia  

Explanation:

A portion of the Bering Sea water goes through the strait into the Arctic Ocean, however a large portion of it comes back to the Pacific. In winter the locale is liable to serious tempests and the ocean is secured by ice fields averaging 4 to 5 feet thick.

In midsummer, float ice stays in the Bering Strait. The strait is named after Vitus Bering, a Danish commander, who cruised into the strait in 1728. During the Ice Age, the ocean level fell by a few hundred feet, making the strait into a land connect among Asia and North America, over which a significant movement of plants and creatures, just as people (around 20,000 to 35,000 years ago), happened.

brainliest is someone you pick by simply clicking a button. it only shows up if there are two people that answered your question, then you decide who answer more accurately with detail and explanation and you give that person the title "brainliest".

i hope this your understandings.