Is the recruitment questionnaire platform operator illegal?

Questionnaire is a tool used to collect data in social research. The history of the questionnaire can be traced back to19th century, when empirical social surveys were widely carried out. For example, K. Marx has carefully produced a questionnaire for workers, which is divided into four aspects and nearly 100 questions to fully understand the workers' labor, life and ideological situation. Since the 20th century, structured questionnaires have been used more and more in quantitative research, and combined with sampling surveys, it has become one of the main ways of sociological research. Papers can be written or oral, and can be combined with a topic or a group of topics. The answer composition can also be completely random, so that the subjects can write whatever they want when answering. Their combination can also be more organized, so that the subject can choose one of several alternative answers provided to him (this is also called multiple choice technique). If the intention is obvious, the answer can be direct; If the purpose is hidden, it can also be tortuous and difficult to identify. Questionnaires should be balanced, so that they can evenly allocate whether the subjects should give a positive or negative answer to a specific topic.