Question: What does the aggregate $project operation do ? Provide at least one example. Provide an example of when the $project operation could be used. What

What does the aggregate $project operation do? Provide at least one example.
Provide an example of when the $project operation could be used.
What does the aggregate $match operation do? Provide at least one example.
Provide an example of when the $match operation could be used.
What does the $sort operation do? Provide at least one example.
Provide an example of when the $sort operation could be used.

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