Question

Ob, Yenisei and Lena drain into the __________.
(a) Indian Ocean
(b) Pacific Ocean
(c) Arctic Ocean
(d) Antarctic Ocean

Answer 1

Hint:
It is one of the tiniest and shallowest of the five big oceans in the world. It is often referred to as the coldest of all oceans. It is sometimes known as the Mediterranean Arctic Sea and is often defined as an Atlantic Ocean estuary.

Complete answer:
 It is known as Earth's northernmost body of water. It encircles the Arctic, and flows beneath it. Most of the Ocean is covered by ice throughout the year although that is starting to change as temperatures climb. Pale and stark on the surface. This Ocean is home to a stunning array of life. Though it's the world's smallest ocean spanning 6.1 million square miles—the ocean is now receiving unprecedented international attention. Scientists are racing to understand how warming temperatures will alter the Ocean waters and by extension the rest of the climate. This is located in the northern hemisphere north of 60 degrees North latitude and borders the Eurasian and North American continents and surrounds Greenland and several islands. It covers less than 3% of the earth’s surface. Ice occupies a significant portion of the ocean, although the thickness of the ice varies depending on the season. In the Arctic region, many ethnic groups of indigenous people live today, including the Inuit, Yupik, Aleut and Saami, as well as the Nenets in Russia.

Hence, the correct answer is option C.

Note:
In western Siberia, the Ob River is a big river and is the seventh longest river in the world. It is the westernmost of the three great rivers of Siberia which flow into the world's coldest ocean.