Robots have populated the pages of science fiction for decades, and more recently they have made their appearance in the real world. However, few of them look like the futuristic robots described in books-metal figures modeled on the human figure. Today's robots assume a range of forms according to purpose. In the future, humans with hazardous occupations should be replaced by robots to ensure society's welfare. It is obviously preferable to use robots in dangerous situations. Many law enforcement agencies employ robots to conduct surveillance. Some of them, like "throwbots," are small enough to be carried in a backpack and tossed over a fence or up a stairway. Other robots, called "pocketbots," are so tiny they can fit inside a jacket or a pair of pants. These robotic devices-some equipped with infrared bynight vision-can map what they see. They provide human colleagues with additional information about possibly risky situations. Robotic devices can also aid firefighters. Ideally, robots can inform firefighters about the location of people or animals in buildings as well as the presence of volatile materials. In Germany, firefighters are considering the possibility of using insect-like robots for guard duty in forests; these robots would patrol, identify, and possibly even extinguish fires. Using robots in potentially life-threatening situations is common sense. They may be expensive, they may be experimental, but certainly still the best choice. To determine how robots can truly help society, they must be used during critical missions so field experts can pinpoint their drawbacks as well as their advantages. are Which statement best explains the author's bias? 1. The author believes that robots will eventually replace humans in most fields.

2. The author believes that robots should be used to lessen some dangers for humans.

3. The author emphasizes that robots are different from the futuristic robots depicted in books,

4. The author fears that using robots for hazardous situations has drawbacks as well as advantages.​