Question

how could using a video best extend information from the interview when birds get flu and cows go mad! how safe are we?.
the video could show what dr. dowell does at work.
the video could state what dr. dowell does for work.
the video could tell when dr. dowell goes to work.
the video could explain dr. dowells interest in his work.

Explanation:

Video is a visual medium, so it excels at showing actions rather than just stating/telling/explaining verbal information. Showing Dr. Dowell's work provides a visual extension of the interview's content that text-based or verbal information cannot match as effectively.

Answer:

A. The video could show what Dr. Dowell does at work.