There Have Been Several Instances in the Last 150 Years

Multiple Choice

There have been several instances in the last 150 years when valuable materials such as diamonds have been found contained in glacial debris.If one wanted to try to trace such valuable materials back to their source, which moraine would be most useful for tracing valuable gold deposits back to their bedrock source area?

A) Recessional moraine
B) Terminal moraine
C) Lateral moraine
D) Esker