When you say that phrase, you are saying that you found a fact from a reliable source, such as a website, dictionary, encyclopedia, etc.
I believe that the correct option is: D) colons.
Extended quotations that are longer than three lines are introduced with a colon and then they start on a new line but having its entirety indented half an inch from the left margin.
For example:
Mary begins to talk about her past:
(this is where the quotation is)
Answer:
There are many meaning for success. America's traditional definition of success is often thought to be associated with wealth, power and position
