Question

Which sentence from the section "Measuring Thin Ice" BEST introduces the importance of the Dana glacier to the reader?
So to find the volume of the small glacier on Mount Dana, she brought a steam drill.

B
She then used the depths she measured with the drill — along with a computer model — to calculate the volume of the Dana glacier.

C
The glacier's yearly meltwater supports a freshwater stream on which many animals and plants depend.

D
That should offer "this very clear documentation of the glacier as it melts," she says.

Answer 1

C: "The glacier's yearly meltwater supports a freshwater stream on which many animals and plants depend."

This sentence best introduces the importance of the Dana glacier by highlighting its crucial role in supporting local ecosystems.