Respuesta :
The answer is letter A: Oberon is casting a spell on Titania
Oberon wanted to get back the boy he got from a servant woman. Titania won't allow Oberon to get the boy back that's why he decided to cast a spell on her.
Answer: A) Casting a spell on Titania.
Explanation: In the given lines from "Midsummer Night’s Dream" by William Shakespeare, we can see Oberon casting a spell on Titania, the spell will make that Titania fall in love with the first creature she sees when she wakes up, and Oberon makes sure that it is a vile thing. This leads to Titania falling in love with Bottom, who is a man that has been cursed with the head of a donkey.