The sentence with an objective summary of the passage is "Younger generations today often choose to invest less effort into tasks than previous generations."
What is an objective summary?
First, we must understand that a summary is a short text that tells us about the main ideas from another, longer text. In other words, a summary leaves out anything that is unessential, telling us only the most important topics we need to know.
An objective summary is one that does not convey any opinions or feelings of its author. It simply and only summarizes the ideas from the original text without including it own author's biases or opinions about them.
With that in mind, we can choose option A as an objective summary of the passage: "Younger generations today often choose to invest less effort into tasks than previous generations."
Learn more about objective summaries here:
https://brainly.com/question/2588801
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