The red leaf theory believes that the success of a person's career does not lie in the number of red leaves, but in whether he has a particularly large red leaf. This particularly large red leaf is not innate and requires continuous efforts based on personal advantages. To get. According to the above definition, which of the following can be explained by the red leaf theory? ['Although Liu is occasionally late, he is responsible for his work and has a team spirit.', "Xiao Zhang studied math in his undergraduate program, but he felt that the math program was boring, so he chose to study for a master's degree in economics.", "Li's sales ability and financial level are average, but he is particularly sensitive to the market. He worked hard to develop this advantage and finally became an entrepreneur.", 'Xiaowen is an English student, but her spoken language is not good. She minored in international law and eventually became an excellent lawyer.']