The two examples which correctly punctuate an essential expression or element in the sentence are:
Architecture, so popular with Native Americans, is still a flourishing art.
Mexico, where sports are popular, has hosted the Olympic Games at the World Cup.
Some constituents that alter a sentence are indispensable and restrict the meaning of an altered word or prhase, whereas others aren't indispensable and don't affect its meaning. The first ones are separated from the main idea using commas.
Mexico City is home to several museums that display the country’s past. Here we don't have any non essential element.
The National Historical Museum, which is in Chapultepec Castle, is concerned with Mexico’s history since the Spanish conquest. Here, information can't be ommited and in fact, shouldn't be set off with comas, since such expression contains essential information (it is not any National Historic Museum but the National Historic Museum which is in Chapultepec Castle).
The Marshall Plan was considered a huge success as its financial aid helped to restore infrastructure in Western Europe after World War I.
<h3>What is the Marshall Plan?</h3>
This refers to the American initiative in 1948 to provide aid to Western Europe during the aftermath of WWI.
Hence, we can see that your question is incomplete as it does not include the first part and therefore, a general overview of the Marshall Plan is stated.
Read more about The Marshall Plan here:
brainly.com/question/1373135
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B. It states that they are "alone together" and an oxymoron is two contradictory terms placed together.
That's a non-existent, made-up word. It was used in a public appearance
several years ago by a high-up political figure, who meant to say 'truthfullness'.
The word is used now to poke fun and derision at that public figure, or any other
equally pompous, clueless, or verbally challenged one.
<span>30) The function of the word flocking as it is used in this sentence is shown here:
D) It is called a participle and it functions as an adjective in this sentence.The sentence stands as a nice example of how participle phrase adds description to the sentence. The media specialist smiled when he saw the eager students flocking <span>to the area with the latest bestsellers. The highlighted part of the sentence contains objects and modifiers that completes the thought which is a direct characteristic of a participle.</span></span>
