Final answer:
Deposits of natural gas are most numerous in the Middle East and Russia, with the Middle East holding about 80% of the world's oil reserves and the Eurasian Steppes having extensive untapped reserves. The correct answer is option E) the Middle East and Russia
Step-by-step explanation:
The question asks where the deposits of natural gas are most numerous. Considering current data and historical context, deposits of natural gas and oil are particularly abundant in the Middle East and Russia. While petroleum and natural gas deposits are present under the North Sea and were exploited since the 1970s, half of the North Sea oil reserves have been consumed, showing a decrease in reserves over time.
However, the Middle East still holds about 80% of the world's readily-accessible oil reserves, which also suggests a high presence of natural gas given the geological correlation between oil and gas deposits.
Additionally, the Eurasian Steppes, including portions of Russia, have substantial untapped reserves of oil and gas. Moreover, Russia is well known for its vast natural gas reserves, which have been a significant part of its economy. Thus, the correct answer to the question would be E) the Middle East and Russia.