The diagram above shows several rock layers and other geologic features. Each feature is labeled with a unique letter. The order of the letters do not necessarily reflect the order in which the features formed. Examine the diagram, and answer the question that follows. Using the principles of original horizontality, superposition, and cross-cutting relationships, determine which of the following features is the youngest.

N
G
R
H

Without the provided diagram, it is not possible to determine which of the given features (N, G, R, H) is the youngest using the principles of original horizontality, superposition, and cross-cutting relationships. The diagram is necessary to analyze the relative positions and relationships between the different geological features in order to identify the youngest one.

Just pick one

If I were to pick one feature without the diagram, I would choose R as the youngest feature. This is because cross-cutting relationships suggest that any rock or feature that cuts across another must be younger than the one it is cutting across. However, please note that this is a hypothetical answer without the diagram and may not necessarily be accurate.