Final answer:
Malone is possibly referring to the Industrial Revolution, which brought significant advancements to Western societies but also created economic disparities and environmental issues, leading to critical reflections on the actions of adults during this period.
Step-by-step explanation:
When Malone mentions "civilization is not so proud of the work of adults," he is referring to historical events that may have led to societal questioning and reflection about the actions of past generations. None of the provided options directly relate to a recent event where adults' work is criticized, but if we consider history in broader terms, the answer might be the Industrial Revolution as it was indeed a period where European societies flourished, but it also led to significant economic disparities and environmental changes that we are grappling with today. Moreover, the Industrial Revolution created a divide between Western Europe/America and other parts of the world, leading to colonialism and other forms of exploitation.
The Industrial Revolution was integral to the development of the modern concept of civilization, as opposed to savagery, and it has indeed provided opportunities for social progress, while also confronting societies with new dangers, such as those mentioned by Levine. However, this era is also tied to the expansion that resulted in the exploitation of natural materials, colonization, and a shift in the global balance of power - actions which, in contemporary times, may not be looked back upon with pride.