19. Choose the INCORRECT item from the following paragraph: Virtual reality, without a doubt, is the hottest thing in electronics and entertainment today, with “immersive” 360-degree experiences increasingly (A)available via the click of a mouse or tap of a screen. And (B)still it’s hardly a replacement for getting out into nature and experiencing life itself, environmental advocates are starting to use VR as a tool to help everyday people appreciate the natural world around them and the environmental challenges we face as global citizens. Earlier this year, a lab in Stanford University unveiled a short VR documentary and interactive VR game to help explain ocean acidification, a slow-motion and hard-to-explain process (C)whereby excess carbon dioxide in the atmosphere dissolves in the ocean, upping acidity levels and altering marine habitats (D)accordingly.