Mr Davidson Cordoned Off a Section of the School Grounds

Mr. Davidson cordoned off a section of the school grounds as a nature study area featuring plants that grow naturally in the region. What is the BEST educational response to the question: "Why have the children not planted a formal flower garden instead?"

A) This portion of the playground wasn't getting much use anyway.
B) This area gives children a first-hand opportunity to study plants, insects, and other small animals typical of the region.
C) Children like to be outdoors.
D) Natural habitats are less expensive to maintain then formal flower beds.