Separate Layer it's part of the "Atmosphere layers"
<em>Bhutan</em><em> </em><em>is</em><em> </em><em>a</em><em> </em><em>name </em><em>of </em><em>c</em><em>ountry</em><em> </em><em>which </em><em>is </em><em>lo</em><em>cated in the Eastern Himalayas</em><em>.</em>
<em>The</em><em> </em><em>capital</em><em> </em><em>of</em><em> </em><em>Bhutan </em><em>is</em><em> </em><em>thi</em><em>mpu</em><em>.</em>
<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em>.</em><em>.</em><em>.</em>
After reviewing the graph you have given with the question, there are several reasons why carbon 14 can't be used to accurately determine the age of organic remains that are 1 million years old.
A few of the reasons are; Carbon-14 has a short half life, after 1,000,000 years there wouldn't be enough carbon 14, and too little of the original radioactive sample would remain. Any of these choices are correct for the answer to the question you asked.
The answer is (b.) the first gulf war
The first gulf war is between the coalition forces led by the US against Iraq. It is also know as Persian gulf war, Kuwait war, first Iraq war, or Iraq war. It started on August 2, 1990 and ended on February 28, 1991. While the six-day war is the conflict between Israel and Egypt in 1967 and Yom Kippur War in 1973.