Which of the following is a non-metal that remains liquid at room temperature?

Bromine is a non-metal that remains liquid at room temperature. Bromine is a chemical element with the symbol Br and atomic number 35. It is a non-metal and is one of the only two elements (the other being mercury) that are liquid at room temperature and standard pressure. This means that, at temperatures commonly found in most environments, bromine is a liquid and does not exist as a solid or gas. It's important to note that while bromine is a liquid at room temperature, it is still a highly reactive element and can cause serious health hazards if not handled properly. Therefore, it is important to take necessary precautions when working with bromine.