Answer:
A university professor who wrote "Nutritional Requirements of Key Deer"
Explanation:
A Ranger is a sort of police man of the woods, so the only one that could actually provide expert information on Key Deer conservation in florida would be the university professor that wrote "Nutritional Requirements of Key Deer", since he knows the topic and is able to speak professionally about the Key Deer, the other options do not have the expertise, for example to be a member of the Key Deer Protection Alliance, you just have to pay $15 a year to get membership, you don´t have to know anything about the topic.
