Question

if you wanted to study climate change, which fossil would be most useful? a fossil of an organism that is _______.
large and difficult to find, but resistant to temperature change
small, hard, abundant, resistant to temperature change, and easily preserved
small, hard, abundant, sensitive to temperature change, and easily preserved
large and difficult to find, but sensitive to temperature change

Explanation:

To study climate change, a fossil useful for this purpose should reflect temperature changes (so sensitive to temperature, not resistant) and be easy to find/analyze. Small, hard, abundant, and easily preserved fossils are better for study. Also, sensitivity to temperature change allows the fossil to record climate - related temperature shifts. Large and hard - to - find fossils are not practical. Resistant to temperature change fossils can't show temperature - related climate changes. So the fossil of an organism that is small, hard, abundant, sensitive to temperature change, and easily preserved is most useful.

Answer:

C. small, hard, abundant, sensitive to temperature change, and easily preserved (assuming the options are labeled A, B, C, D with the third option being C)