Final answer:
A mutable monument is one that is capable of change in form, meaning, or function and this concept is often discussed in history classes in terms of how societal values shape the interpretation of monuments.
Step-by-step explanation:
For a monument to be described as mutable implies that it is subject to change or capable of change. This change can occur in its physical form, meaning, or the purpose it serves within a society. An example of this mutability can be seen in the transformation of certain historical structures that have been repurposed or reinterpreted over time to reflect different values or serve new functions. In the context of the Scarre article or a history class, these mutable monuments are often discussed in terms of how their meanings evolve as society's values and narratives change.