To accurately choose the best statement regarding the scale of change that has taken place in the rock formation depicted in the pictures of Thor's hammer, one would need to assess the visual evidence in the images and consider geological processes. However, since I do not have access to the actual images or diagram, I can provide guidance based on general geological principles.
A. Rapid changes are occurring each year causing significant changes to the rock formation.
This statement implies a very dynamic environment that might not accurately capture most geological processes, which are typically slower.
B. Rapid changes happened in the past but the rock formation currently isn’t experiencing any additional changes.
This could be plausible if past geological activity is recognized, but it suggests complete stagnation that might not be realistic.
C. Slow changes happened to the rock formation over thousands of years and continue happening each year.
This statement reflects a common understanding of geological processes, where slow erosion and weathering occur continually, even if not visibly drastic over short periods.
D. Slow changes only happened in the distant past to the rock formation causing it to look exactly the same for the past 80 years.
This statement implies that no changes whatsoever have taken place, which is unlikely considering natural processes.
Given typical geological behavior, C is likely the most accurate reflection of ongoing geological processes, assuming the pictures show consistent appearance but still suggests ongoing, albeit slow, changes. Thus, the best choice would be:
C. Slow changes happened to the rock formation over thousands of years and continue happening each year.