The word it in paragraph 3 refers to

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 31 to 35.
Music is the universal language of mankind. Scientists at Harvard published the most comprehensive scientific study on music as a cultural product, which examined what features of song tend to be shared across societies, The research team found that across societies, music is associated with behaviors such as healing, dance and love. They discovered that songs that share behavioral functions tend to have similar musical features.
Additionally, music therapy can help to alleviate symptoms associated with cancer and its treatments, Music can help reduce breathing problems and improve quality of life in patients in all stages of cancer. Just has been demonstrated that for patients undergoing radiation therapy simulation, music therapy lowers anxiety and stress. If you ever have an MRI in a closed unit, one of the first questions the technician will ask is if you would like to listen to some music.
Music can be a safe place for people to explore fear, anxiety, anger and the range of emotional responses to living with cancer. Just as each patient's cancer treatment is individualized, so is each coping strategy. Many strategies involve keeping journal, exercising, finding spiritual support, staying involved in the working environment without pushing oneself too hard, setting aside time to be alone with one’s thoughts and practicing relaxation techniques. Relaxation can involve listening to music of any genre. And finally, the obvious: You don’t need to be musically talented to do music therapy. It cannot cure, treat or prevent cancer, but it can help your patients to relax and improve their emotional and physical well-being.