C. The way the sample was chosen may overrepresent or underrepresent students taking certain language classes.
The samples he chose may not be a representative sample because the number of students per foreign language class may not be the same. Since classes have different numbers of students, one may have a very large number of students while another may have only a few. Taking equal number of students per class is not a representative sample because it doesn't represent the students correctly.
Answer:
A is the one that is true
Step-by-step explanation:
Because W is bigger than Z as it has the bigger proportion of the angle :)
Angle x° and angle
154° are supplementary angles, meaning that they equal 180° when added.
