Dr. Nguyen is studying how the quality of breakfast influences academic performance for elementary school children. Asample of 100 children is selected. Fifty children are provided with a nutritious breakfast when they arrive at school each morning. The other 50 children are given a doughnut each morning. After three months, Dr. Nguyen records the academic achievement level for each child and compares the two groups of scores. In this example, how many levels are there for the independent variable?

a. 1
b. 2
c. 50
d. 100

“a monarchy is indeed the most powerful of any… but then there is imminent danger of his employing that strength to improvident or oppressive purposes.”—william blackstone, commentaries on the laws of england which of the following documents addressed blackstone’s concern in this quote? the magna carta, because it limited the power of the king. common sense, because it encouraged american colonists to declare independence. the mayflower compact, because it created a government and the first written laws for plymouth settlers. the english bill of rights, because it later influenced the u.s. bill of rights.