Answer:
A. Who.
Explanation:
There are five questions that every press release should answers, and those are who, when, where, what, why, and how.
When obviously gives us the time when the even happened.
Where gives us the location.
What explains what happened.
Why gives the reasons as to why the event happened.
How gives us the manner in which it happened.
Who gives us the person who performed the event. In the case above, it is clear that the question is who as it talks about a particular person and his life and career.
