Correct Answer: irrelevant

Solution : The correct choice is the fourth option .

Irrelevant means having no relevance or not related to. It helps convey the intended meaning that the lawyer believed that the past offences did not have any bearing on the current case and should not be considered by the court.

The meanings of the other options are as follows:

• Contagious means communicable by contact.
• Spacious means having a lot of space.
• Arrogant means to be proud or to think of oneself to be better than others.

Therefore, the complete sentence is: The defendant’s lawyer argued that his past offences were irrelevant to this case.