The role of text-decoration is a self-defense mechanism or adaptive behavior. It refers to an artificial concealment that does not meet social value standards, is obviously unreasonable, or fails to achieve personal pursuit goals. Defend yourself by saying that your actions are justified and reasonable to conceal your true motivations or wishes. According to the definition above, which of the following is options for decoration? ['Xiaoming did not hesitate to hurt his hand to avoid the exam because he did not review his homework.', 'In order to escape legal sanctions, a criminal suspect colluded with witnesses to give false testimony and fabricated an absence certificate to justify himself.', "An electronic company's new product failed to be put on the market. After research, management determined that the reason for the failure was that the previous publicity had not been done well.", 'Xiao Wang wants to be a company manager, but he thinks he is not capable enough, he did not sign up for competition, but afterward he told others that he was disdainful to participate.']