We can see the live preview by hovering over respecting option that how it will look after pasting the content over there and then we can choose one of it.
Paste Options comes at the end of text pasted. Shortcut for enabling it is CTRL.
Paste Options for Keep Source formatting. Shortcut for it is CTRL + K.
Paste Options for Merge formatting. Shortcut for it is CTRL + M.
Paste Options for Keep Text Only. Shortcut for it is CTRL + T.
Paste Options for enabling Paste Options in Right Click.
Live preview of text when mouse hovers over one of the options.