I believe the answer would be ".docx". It is the file extension used in recent version of microsoft word. These type of files are XML based and are able to have texts, objects and other additions which are stored in separate files and are compressed as one single file.
Answer:b. It is an estimate of the standard deviation
Explanation:
Answer: filename and extension.
Explanation:
Suppose we have %~nxa, where we have two modifiers n and x, and a single variable a.
So, the n modifier after the tilde forces the index variable to expand only to the filename(by the n modifier) and the extension(by the x modifier).
It produces the filename and extension instead of the full path.
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