This is the 14916th most frequent Russian word.
подготовил
"Prepared."
The word 'подготовил' here expresses the action of completing preparatory work for something, which is the presentation.
Я подготовил презентацию для встречи.
I prepared a presentation for the meeting.
In this instance, 'подготовил' refers to the act of providing necessary training or study for readiness for an event, an exam in this case.
Он подготовил нас к экзамену.
He prepared us for the exam.
This example shows 'подготовил' used to describe ensuring readiness or proper setup of physical items for a specific purpose.