Answer:
B. Most people south of the United States still speak Spanish, or a language that is influenced by the Spanish language.
Step-by-step explanation:
It is not A, because Spain was a Catholic country, thereby, when creating colonies and dealing with the natives of Central and South America, they converted the natives to Catholicism, not Protestants.
It is not C, because Spain did not technically settle much of the United States, only reaching towards the south of the US (around present-day Texas), and temporarily in the Louisiana Purchase after it acquired the territory from France (only to give it back). Most Spanish speaking regions are found simply in the south, or from further immigrations later on in history.
It is not D, for again, the Spanish did not extensively settle what is now known as the United States. The United States draws most of it's language and culture from Great Britain, therefore having the United Kingdom as the ancestery of choice (during that time and age).