Concept:Rearranging jumbled parts to form a coherent logical sequence describing a fact about Antarctica.
Explanation:Start with the subject: "Antarctica is a continent" (Q).
Next, add its size comparison: "nearly twice as large as Australia" (R).
Then, introduce the contrast with "but it is virtually covered by a dome-shaped" (P).
Finally, complete the description: "ice sheet nearly 2 miles thick" (S).
The correct sequence is Q, R, P, S, forming a clear and logical sentence.
Answer:Option A (Q R P S)