Read the case study below and choose the best possible answer to the following question.

Tumo has worked full$-$time at a manufacturing plant for the last ten years, but recently, a number of his co$-$workers were laid off and his schedule was cut back from $40$ hours a week to $30$ hours. There are rumors that the company is planning to shut down the plant and move its operations out$-$of$-$state. Rather than wait to lose his job, Tumo decides to go back to school part$-$time to train for a new career. Although he enjoys working at the plant, it was never his dream job. Instead, he always wanted to be a veterinarian. He views the recent changes in his life as an opportunity, not a setback, and he feels confident that he can learn the skills necessary to succeed in his chosen field.

Question.

Which type of mindset did Tumo exhibit?

negative

growth

positive

fixed