A. The two years in which comparisons were made
Answer:
D.Because its physical nature means that each game is unique
Explanation:
<em>d</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>correct</em><em> </em><em>answer</em><em> </em>
Comma C because Period would mean your cutting off the sentence and semicolon is just obviously not right... and question mark.. would mean your asking a question and that would be inside of the quotation mark.