Answer:
An opinion piece explaining why one method of toothbrushing is better than another
Explanation:
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It could be C? If not. I'm not sure then
An ambitious project is the one in which there are high expectations to fulfill; therefore, there can be many obstacles during the development of the project. An example of an ambitious project can be to build a free shelter for homeless people in every city of the United States only by asking the citizens to provide a voluntary fee. It may be difficult and ambitious to gather all the money needed to launch the project, but it is not impossible.