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Helpful answers
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May 21, 2016 1:55 PM in response to Ytechby Carolyn Samit,Hi ..
"it doesn't give you the option to choose what to do"
You can edit sleep preferences in System Preferences > Energy Saver
About Energy Saver sleep and idle modes in Mac OS X
OS X: Saving energy with Sleep
"how can I be sure that my Mac is actually going to sleep"
Anytime you close the lid, that automatically puts your Mac in Sleep mode.