The correct answer is C. quotation marks
Using quotation marks forces the search engine to search only for websites that have that specific phrase. If you don't use them then it will also search for those websites that have only parts of the phrase, but using the marks makes it better for your search.
Answer: A header is the top margin of each page, and a footer is the bottom margin of each page. Headers and footers are useful for including material that you want to appear on every page of a document such as your name, the title of the document, or page numbers.
The correct answer is the bystander effect.
In psychology, the bystander effect refers to a form of apathy, to the fact that people are less likely to offer someone help if there are other people around. They will think that they don't need to do anything about the situation because someone else will do it. So in the case above, the neighbors might have thought that someone else will call the police, but apparently no one did.
