The phrase "mechanically fastened another button of his shirt and did not reply" shows that "absently" means not paying attention.
<h3>The meaning of "absently"</h3>
It is common for authors to use context clues when they introduce a word readers may not know. Context clues are pieces of information that help readers figure out the meaning of that word.
In the passage we are analyzing here, it is possible to infer the meaning of "absently" when we read the phrase that says "mechanically fastened another button." When we do something mechanically, we do it automatically, without giving it much thought.
In other words, we do it without paying attention. That is precisely what "absently" mean. Thus, the phrase helps us figure out the meaning of "absently."
Learn more about context clues here:
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An omnipotent is someone with the quality of having unlimited power and potential.
This abbreviation could stand for <em>sound effects</em> and so it could be needed in scripts for television ads (D).
In the copy for billboards (A) sound effects are irrelevant just like in the copy for magazine ads (B) or newspaper ads (C), because sound effects are not needed in these kinds of advertisement. So, as sound effects can only be used in one of these choices, television ads, the abbreviation SFX will be needed in scripts for TV ads. Also, similar abbreviations could only be used in the script of an advert and not in the copy that is the final text that will be shown to the public, so choices A, B, and C are wrong for this reason as well.