The rhyme scheme is AABB. The corresponding rhyming lines are directly next to each other.
The irony is that although Jennifer doesn't think that the school devotes enough time to the Math club she is still promoting it. this is situational irony.
The statement that does not support the conclusion that Hamlet is a complex character is : Hamlet is intelligent and attended university at Wittenberg. Surely, all the events that occurred during Hamlet's period of being a Wittenberg student is a significant point of the plot that has influence on the whole story. But, the question is to find a characteristic which does not describes the main character as complex, and this option is not suitable in this case. This is the only option that contains a fact from his life but does not reflect how versatile and dynamic Hamlet is.