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
Produce means to make soemthing, but since I can't see the paragraph, I can't fully answer the question, since theres no paragraph to follow it on. Sorry...
