It can be letter D, they suggest the website has been hacked or may have a virus or t<span>he website owner linked to a site that is behind a firewall that does not allow outside access (such as an Intranet site or a restricted access area on a website).</span> a virus because
Answer:
B. Standard and non-standard English
Explanation:
Standard and non-standard English have formal and informal styles and are distinguished by word choice and syntax.
A prepositional phrase is a preposition and a noun, with or without the addition of a modifier. "At the corner" is the prepositional phrase in this instance.