An elementary school teacher wants to know if the words in a book are too difficult for her students. she reads the first sentence on the first page in every chapter and finds three words her students would not know. what is the sample in this situation
a. the three words her students would not know
b. the words that she reads that her students would know
c. every word in the book
d. every word in the first sentence of the first page of every chapter< —my answer