If I have a Ghost Quarter on the field and then I play Crack the Earth, can I target my Ghost Quarter for Crack the Earth and then use the tap ability of Ghost Quarter in response to destroy a land of my opponent? Thanks in advance.
You don't choose a land beforehand for Crack the Earth; you choose and sacrifice one land you have when Crack the Earth resolves. You don't have a window of time between choosing a land to sacrifice, and actually sacrificing it.
So you either sacrifice Ghost Quarter for Crack the Earth and not for its ability; or you use Quarter's ability in response, and end up having to sacrifice some other land to Crack the Earth.
You don't choose a land beforehand for Crack the Earth; you choose and sacrifice one land you have when Crack the Earth resolves. You don't have a window of time between choosing a land to sacrifice, and actually sacrificing it.
So you either sacrifice Ghost Quarter for Crack the Earth and not for its ability; or you use Quarter's ability in response, and end up having to sacrifice some other land to Crack the Earth.