Question

1. the sculpted pinnacles in bryce canyon national park are the result of ______

○ exfoliation
○ differential weathering
○ frost wedging
○ unloading

Explanation:

The sculpted pinnacles (hoodoos) in Bryce Canyon National Park are formed due to differential weathering and erosion, where different rock layers weather at different rates. Among the options, differential weathering is the key process for their formation. Solution (saturation - related processes), frost wedging (freeze - thaw, more for jointing), and unloading (removal of overlying rock, less relevant here) are not the primary cause for these unique pinnacles.

Answer:

B. differential weathering (assuming the second option is labeled B; adjust the label as per the original question's numbering if different, but the content is "differential weathering")