B. chief examiner.
A chief examiner would be someone or something else unrelated entirely. Perhaps a police chief or a medical examiner are the closest to a "chief examiner" anything.
Explanation:
Photosynthesis is a process of preparing food by green plants using oxygen, Carbon dioxide, sunlight, water and minerals.
Answer:
<em>The Government of Bhutan has been a constitutional monarchy since 18 July 2008. The King of Bhutan is the head of state. The executive power is exercised by the Lhengye Zhungtshog, or council of ministers, headed by the Prime Minister. </em>
Answer:
for the first one they lived in Yellow River Valley.