While researching a topic, a student has taken the following notes:
· The Pilot Knob National Wildlife Refuge (NWR) is a protected natural area in Missouri.
· It encompasses 90 acres.
· It was established to safeguard the habitat of the Indiana bat, an endangered species.
· The Pilot Knob NWR is managed by the US Fish & Wildlife Service.
· The US Fish & Wildlife Service limits human activities in the area.
The student wants to indicate the size of the Pilot Knob NWR. Which choice most effectively uses relevant information from the notes to accomplish this goal?