False something that is ethical does not appeal to common sense<span />
The subject here is simple" it's just "Antarctica" .
The verb is also not compound, it's a simple verb: "has".
The compound part of the sentence is the object: it is: "a thick ice cover and the highest average elevation of all the continents"
so the correct answer is "compound subject"
B. Plotted is the correct answer. The other words shouldn't have double consonants.
