The correct answer is complete subject.
Assuming that the words in bold are <em>Melinda and Belinda, her twin sister, </em>then the answer is complete subject. A complete subject includes not only the actual subject of a sentence, but also all words directly connected to it (such as <em>her twin sister). </em>If only Melinda and Belinda were bolded, then it would be a compound subject (consists of more than one subject).
Criterion 3 known as usefulness
<span>virtue ethics is an approach to Ethics that emphasizes an individual's character as the key element of ethical thinking, rather than rules about the acts themselves or their consequences.</span>
BECAUSE WE'RE AWESOME
but no seriously I couple were because the land was good for farming and there were lots of wildlife hunting and middle of the map and good arctecture