Answer:
Aren't sufficiently brief
Explanation:
Verbal irony is defined as saying something different than what you mean. In this phrase, we're looking at two conflicting words; sufficient and brief.
If Jamile's presentations weren't sufficient, they would would not be enough to meet the needs of the current situation, which we can see is obviously not the case. His presentations are incredibly detailed, so they more than suffice for what they need. However, Dina also says "brief", which conflicts with sufficient, because she wants it to be short. So, in essence, she's saying "I want a long short report", which is obviously ironic and counteractive.
