Explanation:

- Murder: To be guilty of murder, the act must result in the unlawful killing of another person with intent. X did not kill Y, so this is not applicable.

- House trespass: This involves unlawfully entering someone’s property with intent to commit an offense. X entered Y’s bedroom with intent to harm Y, which constitutes house trespass.

- Attempt to murder: This involves actions taken towards committing murder. Since Y was not present, X’s actions did not directly attempt to harm Y.

- No offence: All actions must be lawful to be no offence. X had intent to murder and unlawfully entered Y’s home, thus an offense is committed.

Option 2: House trespass is correct.