。
Did she mention the exam results?
Literal
She [topic-は] exam [of-の] results [about-について] did-mention [question-か]?
The compound particle ~について ('about / concerning / regarding') marks the topic that a verb of communication or thought is directed at — 言及する ('mention'), 話す ('talk about'), 考える ('think about'), 書く ('write about'). 言及する (げんきゅうする) itself is a fairly formal Sino-Japanese verb — 触れる or 話に出す would be more conversational. Combined with the polite ~ましたか, the sentence has a measured, slightly stiff quality typical of careful inquiry rather than chatty conversation.