Question

select the example of a proxy indicator of paleoclimate. tree rings ice cores coral skeletons all of these are correct.

Explanation:

Tree rings, ice cores, and coral skeletons are all proxy indicators. Tree rings' width and density reflect past climate (e.g., rainfall, temperature). Ice cores trap gases and particles that record past atmospheric conditions. Coral skeletons' growth bands and chemical composition indicate past ocean temperatures and chemistry.

Answer:

All of these are correct.