Explanation:
The United Nations (UN) is an intergovernmental organization that aims to maintain international peace and security, develop friendly relations among nations, achieve international cooperation, and be a centre for harmonizing the actions of nations. It is the largest, most familiar, most internationally represented and most powerful intergovernmental . in the world. The UN is headquartered on international territory in New York City, with its other main offices in Geneva, Nairobi, Vienna and The Hague.
A gerund looks like a verb which ends in -ing, but it functions as a noun in a sentence. A predicate noun follows a linking verb, such as <em>to be, to seem, </em>etc. So, among all these examples, the only gerund phrase which is used as a predicate noun is found in the last sentence, and the gerund is leading, whereas the whole phrase is leading people to their seats.
In "Symptoms" John Steinbeck analyzes the post war effects of the soldiers from World War II and in “Ambush Tim O’Brien show his remember of a soldier that die in Vietnam war, he alludes to My Khe a Vietnam Beach during his story, the answer is A. World War II and the Vietnam War
