With the rapid development of the information age, the demand for high-knowledge classes is increasing. Therefore, in the future society, it will be difficult for people who do not master information technology to gain a foothold in society. Which of the following questions the above statement? ['It is difficult to operate high-tech tools without professional skills.', 'The development of high technology has caused more and more people to lose their jobs.', 'The development of computer technology makes fewer and fewer requirements for tool operation skills.', 'The mentally retarded can only live in social welfare homes.']