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.
D, because although he regrets inficting pain, he did what must be done.
The answer is Deleting the information that is not necessary
Explanation:
A sidebar refers to the information placed on one side of an article, book or any other printed or web publication, usually use to add extra information related to the main content in a concise way, this can include quotes, lists, instructions, among others. In this case, the sidebar is used to give instruction to the readers on how to prevent onions from making them cry, considering instructions are lists of steps to carry out a process and should be clear and concise and besides the sidebar should only include information in a concise way, only key information should be included. In this way, the explanation of why each of the points in the sidebar work is not necessary but only the instruction itself it means the first sentence of each point. For example, the first point should be 1. Chill the onions in the refrigerator for 30 minutes before peeling or chopping them, as the rest is only extra information not required to follow the instructions. Thus, a way to make these instructions more concise is to delete the information that is not necessary, which is mainly the explanation of why each tip works.