Answer:
2. Olivia rejects Orsino and prefers Cesario.
4. Antonio risks danger bringing Sebastian to Illyria.
1. Olivia mistakes Sebastian for Cesario.
3. Viola is astonished to see her brother.
Step-by-step explanation:
William Shakespeare's "Twelfth Night" is a romantic comedy revolving around the story of Viola and her twin brother Sebastian. The play deals with themes of love, suffering, deception, disguise, etc.
The given events in the order of their occurrence are listed as below-
2. Olivia rejects Orsino and prefers Cesario.
This is seen in Act I where Orsino has been rejected by Lady Olivia. And with Viola disguised as Cesario and working for Orsino, Lady Olivia began to fall in love with Cesario/Viola.
4. Antonio risks danger bringing Sebastian to Illyria.
Antonio had been involved in a fight with Orsino and thus, is not safe in Illyria. But despite this risk, Antonio's love and care for his friend provided loyalty for Sebastian, for he continues to follow Sebastian despite the risk for his own life. This scene is seen in Act III.
1. Olivia mistakes Sebastian for Cesario.
In Act IV, we see not only Olivia mistaking Sebastian for Cesario, his twin sister in disguise. Sir Andrew, Sir Toby, and Feste are all vying for Lady Olivia's love, also mistook him for his sister's disguised identity.
3. Viola is astonished to see her brother.
Act V shows the union of the twins and the eventual solving of the confusion. Viola discards her disguise, and Lady Olivia finally realizes Sebastian's real identity, and the two got married. Orsino also falls in love with Viola and the two lovers unite.
Thus, the order is 2, 4, 1, 3.